Source : Webster's Revised Unabridged Dictionary (1913)

Abaca \Ab"a*ca\ ([a^]b"[.a]*k[.a]), n. [The native name.]
   The Manila-hemp plant ({Musa textilis}); also, its fiber. See
   {Manila hemp} under {Manila}.

Source : WordNet®

abaca
     n 1: a kind of hemp obtained from the abaca plant in the
          Philippines [syn: {Manila hemp}, {Manilla hemp}]
     2: Philippine banana tree having leafstalks that yield Manila
        hemp used for rope and paper etc [syn: {Manila hemp}, {Musa
        textilis}]