Source : Webster's Revised Unabridged Dictionary (1913)

Flimsy \Flim"sy\, a. [Compar. {Flimsier}; superl. {Flimsiest}.]
   [Cf. W. llymsi naked, bare, empty, sluggish, spiritless. Cf.
   {Limsy}.]
   Weak; feeble; limp; slight; vain; without strength or
   solidity; of loose and unsubstantial structure; without
   reason or plausibility; as, a flimsy argument, excuse,
   objection.

         Proud of a vast extent of flimsy lines.  --Pope.

         All the flimsy furniture of a country miss's brain.
                                                  --Sheridan.

   Syn: Weak; feeble; superficial; shallow; vain.

Flimsy \Flim"sy\, n.
   1. Thin or transfer paper.

   2. A bank note. [Slang, Eng.]

Source : WordNet®

flimsy
     adj 1: lacking solidity or strength; "a flimsy table"; "flimsy
            construction"; "a fragile link with the past" [syn: {fragile}]
     2: having little substance or significance; "a flimsy excuse";
        "slight evidence"; "a tenuous argument"; "a thin plot"
        [syn: {slight}, {tenuous}, {thin}]
     3: very thin and insubstantial; "thin paper"; "flimsy voile";
        "light summer dresses" [syn: {light}]
     4: resembling cardboard especially in flimsiness; "apartments
        with cardboard walls" [syn: {cardboard}]
     n : a thin strong light-weight translucent paper used especially
         for making carbon copies [syn: {onionskin}]
     [also: {flimsiest}, {flimsier}]