GNU Dico
From WordNet dictionary, version 3.0:
crown
n. 1. the Crown (or the reigning monarch) as the symbol of the power and authority of a monarchy; "the colonies revolted against the Crown"
2. the part of a tooth above the gum that is covered with enamel
3. a wreath or garland worn on the head to signify victory
4. an ornamental jeweled headdress signifying sovereignty
Synonyms: diadem
5. the part of a hat (the vertex) that covers the crown of the head
6. an English coin worth 5 shillings
7. the upper branches and leaves of a tree or other plant
Synonyms: treetop
8. the top or extreme point of something (usually a mountain or hill); "the view from the peak was magnificent"; "they clambered to the tip of Monadnock"; "the region is a few molecules wide at the summit"
Synonyms: peak, crest, top, tip, summit
9. the award given to the champion
Synonyms: pennant
10. the top of the head
Synonyms: pate, poll
11. (dentistry) dental appliance consisting of an artificial crown for a broken or decayed tooth; "tomorrow my dentist will fit me for a crown"
Synonyms: crownwork, jacket, jacket crown, cap
12. the center of a cambered road
Synonyms: crest
v. 1. invest with regal power; enthrone; "The prince was crowned in Westminster Abbey"
Synonyms: coronate
2. be the culminating event; "The speech crowned the meeting"
Synonyms: top
3. form the topmost part of; "A weather vane crowns the building"
4. put an enamel cover on; "crown my teeth"