From WordNet (r) 3.0 (2006) [wn]:
Amsterdam
n 1: an industrial center and the nominal capital of the
Netherlands; center of the diamond-cutting industry; seat
of an important stock exchange; known for its canals and
art museum [syn: Amsterdam, Dutch capital, {capital of
The Netherlands}]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Amsterdam \Amsterdam\ prop. n. (Geography)
A large city which is an industrial center and the official
capital of The Netherlands. Population (2000) = 724,096.
Syn: Dutch capital, capital of The Netherlands
[WordNet 1.5 +PJC]