The Collaborative International Dictionary of English v.0.48:

frank \frank\ (fr[a^][ng]k), v. t. [imp. & p. p. franked
   (fr[a^][ng]kt); p. pr. & vb. n. franking.]
   1. To send by public conveyance free of expense. --Dickens.
      [1913 Webster]

   2. To extempt from charge for postage, as a letter, package,
      or packet, etc.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Frank \Frank\, n. [See Frank, a.]
   The privilege of sending letters or other mail matter, free
   of postage, or without charge; also, the sign, mark, or
   signature denoting that a letter or other mail matter is to
   go free of postage. Called also the franking privilege.
   [1913 Webster +PJC]

         I have said so much, that, if I had not a frank, I must
         burn my letter and begin again.          --Cowper.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Frank \Frank\, n. [OF. franc.]
   A pigsty. [Obs.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Frank \Frank\, v. t.
   To shut up in a frank or sty; to pen up; hence, to cram; to
   fatten. [Obs.] --Shak.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Frank \Frank\, n. (Zool.)
   The common heron; -- so called from its note. [Prov. Eng.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

frank \frank\ (fr[a^][ng]k), a. [Compar. franker
   (fr[a^][ng]k"[~e]r); superl. frankest.] [F. franc free,
   frank, L. Francus a Frank, fr. OHG. Franko the name of a
   Germanic people on the Rhine, who afterward founded the
   French monarchy; cf. AS. franca javelin, Icel. frakka. Cf.
   Franc, French, a., Franchise, n.]
   1. Unbounded by restrictions, limitations, etc.; free. [R.]
      "It is of frank gift." --Spenser.
      [1913 Webster]

   2. Free in uttering one's real sentiments; not reserved;
      using no disguise; candid; ingenuous; as, a frank nature,
      conversation, manner, etc.
      [1913 Webster]

   3. Liberal; generous; profuse. [Obs.]
      [1913 Webster]

            Frank of civilities that cost them nothing.
                                                  --L'Estrange.
      [1913 Webster]

   4. Unrestrained; loose; licentious; -- used in a bad sense.
      --Spenser.

   Syn: Ingenuous; candid; artless; plain; open; unreserved;
        undisguised; sincere. See Candid, Ingenuous.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Frank \Frank\, n. [Cf. F. franc. See Frank, a.]
   1. (Ethnol.) A member of one of the German tribes that in the
      fifth century overran and conquered Gaul, and established
      the kingdom of France.
      [1913 Webster]

   2. A native or inhabitant of Western Europe; a European; -- a
      term used in the Levant.
      [1913 Webster]

   3. A French coin. See Franc.
      [1913 Webster]

U.S. Gazetteer (1990):

Frank, NC
  Zip code(s): 28657

Moby Thesaurus II by Grady Ward, 1.0:

213 Moby Thesaurus words for "frank":
   PP, RD, RFD, Spartan, Vienna sausage, accessible, airmail, all jaw,
   approachable, artless, ascetic, austere, bald, bangers, bare,
   barefaced, black pudding, blood pudding, bluff, blunt, bologna,
   book post, born yesterday, braunschweiger, brazen, broad, brusque,
   cancellation, candid, chatty, childlike, coarse, common,
   commonplace, communicative, confiding, conversable, conversational,
   correspondence, demonstrative, direct, direct mail,
   direct-mail selling, dispassionate, dog, downright, dry, dull,
   earthy, effusive, expansive, explicit, express, extroverted, fair,
   flip, fluent, forthright, fourth-class mail, frankfurter,
   frankhearted, free, free-speaking, free-spoken, free-tongued,
   gabby, garrulous, gassy, genuine, glib, gooseliver, gossipy,
   gregarious, gross, guileless, gushy, gutter, halfpenny post,
   headcheese, heart-to-heart, homely, homespun, honest, hot dog,
   impartial, ingenu, ingenuous, innocent, junk mail, just,
   knockwurst, lean, letter post, letters, liver sausage, liverwurst,
   long-winded, loquacious, low, mail, mail-order selling,
   mailing list, matter-of-fact, multiloquent, multiloquious, naive,
   natural, neat, newspaper post, newsy, on the level, open,
   openhearted, outgoing, outspoken, overtalkative, parcel post,
   plain, plain-speaking, plain-spoken, plainspoken, post, post day,
   postage, postage stamp, postmark, prolix, prosaic, prosing, prosy,
   pure, rank, raw, registered mail, round, rural delivery,
   rural free delivery, rustic, salami, saucisse, sausage, scrupulous,
   sea mail, seapost, self-revealing, self-revelatory, severe, simple,
   simple-speaking, simplehearted, simpleminded, sincere, single,
   single-hearted, single-minded, smooth, sober, sociable, spare,
   special delivery, special handling, stamp, stark, straight,
   straight-out, straightforward, surface mail, talkative, talky,
   transparent, trustful, trusting, truthful, unabashed, unadorned,
   unaffected, unbiased, unchecked, unconcealed, unconstrained,
   uncouth, undisguised, undissembled, undissembling, unequivocal,
   unguarded, unhampered, unimaginative, uninhibited, unmannered,
   unpoetical, unrepressed, unreserved, unrestrained, unrestricted,
   unreticent, unsecretive, unshrinking, unsilent, unsophisticated,
   unsuppressed, unsuspicious, unvarnished, unwary, upright, verbose,
   voluble, vulgar, weenie, wiener, wienerwurst, wienie, windy