The Collaborative International Dictionary of English v.0.48:

Lip \Lip\ (l[i^]p), n. [OE. lippe, AS. lippa; akin to D. lip, G.
   lippe, lefze, OHG. lefs, Dan. l[ae]be, Sw. l[aum]pp, L.
   labium, labrum. Cf. Labial.]
   1. One of the two fleshy folds which surround the orifice of
      the mouth in man and many other animals. In man the lips
      are organs of speech essential to certain articulations.
      Hence, by a figure they denote the mouth, or all the
      organs of speech, and sometimes speech itself.
      [1913 Webster]

            Thine own lips testify against thee.  --Job xv. 6.
      [1913 Webster]

   2. An edge of an opening; a thin projecting part of anything;
      a kind of short open spout; as, the lip of a vessel.
      [1913 Webster]

   3. The sharp cutting edge on the end of an auger.
      [1913 Webster]

   4. (Bot.)
      (a) One of the two opposite divisions of a labiate
          corolla. (b) The odd and peculiar petal in the
          Orchis family. See Orchidaceous.
          [1913 Webster]

   5. (Zool.) One of the edges of the aperture of a univalve
      shell.
      [1913 Webster]

   6. Impudent or abusive talk; as, don't give me any of your
      lip. [Slang]

   Syn: jaw.
        [1913 Webster]

   Lip bit, a pod auger. See Auger.

   Lip comfort, comfort that is given with words only.

   Lip comforter, one who comforts with words only.

   Lip labor, unfelt or insincere speech; hypocrisy. --Bale.

   Lip reading, the catching of the words or meaning of one
      speaking by watching the motion of his lips without
      hearing his voice. --Carpenter.

   Lip salve, a salve for sore lips.

   Lip service, expression by the lips of obedience and
      devotion without the performance of acts suitable to such
      sentiments.

   Lip wisdom, wise talk without practice, or unsupported by
      experience.

   Lip work.
      (a) Talk.
      (b) Kissing. [Humorous] --B. Jonson.

   To make a lip, to drop the under lip in sullenness or
      contempt. --Shak.

   To shoot out the lip (Script.), to show contempt by
      protruding the lip.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Lip \Lip\, v. t. [imp. & p. p. Lipped (l[i^]pt); p. pr. & vb.
   n. Lipping (-p[i^]ng).]
   1. To touch with the lips; to put the lips to; hence, to
      kiss.
      [1913 Webster]

            The bubble on the wine which breaks
            Before you lip the glass.             --Praed.
      [1913 Webster]

            A hand that kings
            Have lipped and trembled kissing.     --Shak.
      [1913 Webster]

   2. To utter; to speak. [R.] --Keats.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Lip \Lip\, v. t.
   To clip; to trim. [Obs.] --Holland.
   [1913 Webster] lipemia

WordNet (r) 3.0 (2006):

lip
    n 1: either of two fleshy folds of tissue that surround the
         mouth and play a role in speaking
    2: (botany) either of the two parts of a bilabiate corolla or
       calyx
    3: an impudent or insolent rejoinder; "don't give me any of your
       sass" [syn: sass, sassing, backtalk, back talk,
       lip, mouth]
    4: the top edge of a vessel or other container [syn: brim,
       rim, lip]
    5: either the outer margin or the inner margin of the aperture
       of a gastropod's shell

Moby Thesaurus II by Grady Ward, 1.0:

184 Moby Thesaurus words for "lip":
   aerophone, answer back, articulate, back talk, backchat, bagpipe,
   bank, bell, bilge, blain, bleb, blister, blob, blow, blow a horn,
   board, border, bordure, boss, bow, breathe, brim, brink, brow,
   bubble, bugle, bulb, bulge, bulla, bump, bunch, burl, buss, button,
   cahot, carillon, chime, chine, chorus, clarion, clump, coast,
   come out with, communicate, condyle, convex, convey, deliver,
   disclose, doodle, double reed, double-tongue, dowel, ear, edge,
   embouchure, emit, enunciate, express, featheredge, fife, flange,
   flap, fling off, flute, formulate, frame, fringe, gall, give,
   give expression, give out with, give tongue, give utterance,
   give voice, gnarl, handle, hem, hill, horn, hump, hunch, impart,
   jaw, jog, joggle, key, knob, knot, knur, knurl, labellum, labium,
   labrum, lap, lave, ledge, let out, limb, limbus, list, loop, lump,
   marge, margin, mole, mountain, mouth, mouthpiece, nevus, nub,
   nubbin, nubble, osculate, out with, papilloma, peck, peg, phonate,
   phrase, pipe, pour forth, present, pronounce, provoke, put forth,
   put in words, ragged edge, raise, reed, rib, ridge, rim, ring,
   sass, sassiness, sauce, sauciness, say, selvage, set forth, shore,
   shoulder, side, sideline, skirt, slide, smack, smooch, sound,
   spine, stud, style, tab, talk back, tell, throw off, tongue, toot,
   tooter, tootle, triple-tongue, trumpet, tubercle, tubercule,
   tweedle, utter, valve, verbalize, verge, verruca, vesicle,
   vocalize, voice, wale, wart, wash, welt, whisper, whistle, wind,
   wind instrument, wind the horn, word



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

LIP
       Loop Initialization Primitive (SCSI)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

LIP
       Large Internet Packet


Easton's 1897 Bible Dictionary:

Lip
   besides its literal sense (Isa. 37:29, etc.), is used in the
   original (saphah) metaphorically for an edge or border, as of a
   cup (1 Kings 7:26), a garment (Ex. 28:32), a curtain (26:4), the
   sea (Gen. 22:17), the Jordan (2 Kings 2:13). To "open the lips"
   is to begin to speak (Job 11:5); to "refrain the lips" is to
   keep silence (Ps. 40:9; 1 Pet. 3:10). The "fruit of the lips"
   (Heb. 13:15) is praise, and the "calves of the lips"
   thank-offerings (Hos. 14:2). To "shoot out the lip" is to
   manifest scorn and defiance (Ps. 22:7). Many similar forms of
   expression are found in Scripture.