grammatophyllum

from The Century Dictionary.

• noun A genus of plants of the family Orchidaceæ.

from the GNU version of the Collaborative International Dictionary of English.

• noun A small genus of large epiphytic or terrestrial orchids of Southeastern Asia to Polynesia; the giants of the Orchidaceae having long narrow leaves and drooping flower clusters often 6 feet long.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun small genus of large epiphytic or terrestrial orchids of southeastern Asia to Polynesia; the giants of the Orchidaceae having long narrow leaves and drooping flower clusters often 6 feet long