The Collaborative International Dictionary of English v.0.48:

Tapa \Ta"pa\, n.
   A kind of cloth prepared by the Polynesians from the inner
   bark of the paper mulberry; -- sometimes called also kapa.
   [1913 Webster] Tapadera

WordNet (r) 3.0 (2006):

tapa
    n 1: the thin fibrous bark of the paper mulberry and Pipturus
         albidus [syn: tapa, tapa bark, tappa, tappa bark]
    2: a paperlike cloth made in the South Pacific by pounding tapa
       bark [syn: tapa, tappa]