any tropical American arboreal fruit-eating bird of the family Ramphastidae, having a large brightly coloured bill with serrated edges and a bright plumage 
WordReference Random House Learner's Dictionary of American English © 2025
tou•can /ˈtukæn, tuˈkɑn/USA pronunciation  
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2025- Birdsa brightly colored, fruit-eating bird of the New World tropics, having a very large bill.
 
tou•can 
(to̅o̅′kan, -kän, to̅o̅ kän′),USA pronunciation n. 
- any of several usually brightly colored, fruit-eating birds of the family Ramphastidae, of tropical America, having a very large bill.
 - ([cap.]) [Astron.]the constellation Tucana.
 
- Tupi tucan (imitative of its cry)
 - Portuguese tucano
 - French
 - 1550–60
 
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'toucan' also found in these entries (note: many are not synonyms or translations):