From WordNet (r) 3.0 (2006) [wn]:
coconut
n 1: the edible white meat of a coconut; often shredded for use
in e.g. cakes and curries [syn: coconut, coconut meat]
2: large hard-shelled oval nut with a fibrous husk containing
thick white meat surrounding a central cavity filled (when
fresh) with fluid or milk [syn: coconut, cocoanut]
3: tall palm tree bearing coconuts as fruits; widely planted
throughout the tropics [syn: coconut, coconut palm, {coco
palm}, coco, cocoa palm, coconut tree, {Cocos
nucifera}]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
coconut \co"co*nut\, Cocoanut
\Co"coa*nut`\(k[=o]"k[-o]*n[u^]t`), n.
1. the edible white meat of a coconut[3]; often shredded for
use in e.g. cakes and curries.
Syn: coconut meat.
[WordNet 1.5]
2. the cocoa palm.
Syn: coconut palm, coco palm, coco, cocoa palm, coconut tree,
Cocos nucifera.
[WordNet 1.5]
3. The large, hard-shelled oval nut of the cocoa palm. It has
a fibrous husk containing a thick white fibrous meat much
used as food, in confections, and in making oil. It has a
central cavity filled (when fresh) with an agreeable milky
liquid.
[1913 Webster + WordNet 1.5] Cocobolo