Source : Webster's Revised Unabridged Dictionary (1913)

Laputan \La*pu"tan\, a.
   Of or pertaining to Laputa, an imaginary flying island
   described in Gulliver's Travels as the home of chimerical
   philosophers. Hence, fanciful; preposterous; absurd in
   science or philosophy. ``Laputan ideas.'' --G. Eliot.

Source : WordNet®

Laputan
     adj 1: relating to or characteristic of the imaginary country of
            Laputa or its people
     2: not practical or realizable; speculative; "airy theories
        about socioeconomic improvement"; "visionary schemes for
        getting rich" [syn: {airy}, {impractical}, {visionary}]