Source : Webster's Revised Unabridged Dictionary (1913)

Sleeveless \Sleeve"less\, a. [AS. sl?fle['a]s.]
   1. Having no sleeves.

   2. Wanting a cover, pretext, or palliation; unreasonable;
      profitless; bootless; useless. [Obs.] --Shak.

            The vexation of a sleeveless errand.  --Bp.
                                                  Warburton.

Source : WordNet®

sleeveless
     adj 1: having no sleeves; "sleeveless summer dresses" [ant: {sleeved}]
     2: unproductive of success; "a fruitless search"; "futile years
        after her artistic peak"; "a sleeveless errand"; "a vain
        attempt" [syn: {bootless}, {fruitless}, {futile}, {vain}]