The Collaborative International Dictionary of English v.0.48:

Louver \Lou"ver\, Louvre \Lou"vre\, n. [OE. lover, OF. lover,
   lovier; or l'ouvert the opening, fr. overt, ouvert, p. p. of
   ovrir, ouvrir, to open, F. ouvrir. Cf. Overt.] (Arch.)
   A small lantern. See Lantern, 2
   (a) . [Written also lover, loover, lovery, and
       luffer.]

   2. Same as louver boards, below
      [PJC]

   3. A set of slats resembling louver boards, arranged in a
      vertical row and attached at each slat end to a frame
      inserted in or part of a door or window; the slats may be
      made of wood, plastic, or metal, and the angle of
      inclination of the slats may be adjustable simultaneously,
      to allow more or less light or air into the enclosure.
      [PJC]

   Louver boards or Louver boarding, the sloping boards set
      to shed rainwater outward in openings which are to be left
      otherwise unfilled; as belfry windows, the openings of a
      louver, etc.

   Louver work, slatted work.

The Collaborative International Dictionary of English v.0.48:

Lover \Lov"er\ (l[u^]v"[~e]r), n.
   1. One who loves; one who is in love; -- usually limited, in
      the singular, to a person of the male sex. --Gower.
      [1913 Webster]

            Love is blind, and lovers can not see
            The pretty follies that themselves commit. --Shak.
      [1913 Webster]

   2. A friend; one strongly attached to another; one who
      greatly desires the welfare of any person or thing; as, a
      lover of his country.
      [1913 Webster]

            I slew my best lover for the good of Rome. --Shak.
      [1913 Webster]

   3. One who has a strong liking for anything, as books,
      science, or music. "A lover of knowledge." --T. Burnet.
      [1913 Webster]

   4. One who is involved in a sexual relationship with another;
      as, she took a lover.
      [PJC] Lover

The Collaborative International Dictionary of English v.0.48:

Lover \Lo"ver\ (l[=oo]"v[~e]r), Lovery \Lo"ver*y\
   (l[=oo]"v[~e]r*[y^]), n.
   See Louver. [Obs.] --Bp. Hall.
   [1913 Webster]

WordNet (r) 3.0 (2006):

lover
    n 1: a person who loves someone or is loved by someone
    2: an ardent follower and admirer [syn: fan, buff,
       devotee, lover]
    3: a significant other to whom you are not related by marriage

Moby Thesaurus II by Grady Ward, 1.0:

133 Moby Thesaurus words for "lover":
   Maecenas, abettor, acquaintance, addict, admirer, adorer, advocate,
   aficionado, alter ego, amorist, angel, apologist, aspirant,
   aspirer, babe, baby, baby-doll, backer, beau, beloved, best friend,
   bosom friend, boyfriend, brother, buff, buttercup, candidate,
   casual acquaintance, champion, cherub, chick, chickabiddy,
   close acquaintance, close friend, collector, confidant, confidante,
   coveter, darling, dear, deary, defender, dependence, desirer,
   devotee, doll, doxy, duck, duckling, encourager, endorser,
   exponent, familiar, fan, fancier, fancy man, favorer, fellow,
   fellow creature, fellowman, flame, follower, freak, friend,
   friend at court, girl friend, habitue, hankerer, hon, honey,
   honey bunch, honey child, hopeful, hound, inamorata, inamorato,
   infatuate, inseparable friend, intimate, lamb, lambkin, love,
   mainstay, maintainer, man, master, neighbor, other self, paramour,
   paranymph, partisan, patron, pet, petkins, pickup, precious,
   precious heart, promoter, protagonist, pursuer, reliance,
   repository, second, seconder, sectary, sider, snookums, solicitant,
   sponsor, stalwart, standby, steady, sugar, sugar daddy, suitor,
   support, supporter, sustainer, sweet, sweetheart, sweetie,
   sweetkins, sweets, sympathizer, truelove, upholder, votary, wanter,
   well-wisher, wisher, woman, wooer, yearner