1. Any of various deciduous trees of the genus Platanus, especially P. occidentalis of eastern North America, having palmately lobed leaves, ball-like, nodding, hairy fruit clusters, and bark that flakes off in large pieces. Also called buttonball, buttonwood.
2. A Eurasian deciduous maple tree (Acer pseudoplatanus) having palmately lobed leaves, winged fruits, and greenish flowers.
3. A fig tree (Ficus sycomorus) of Africa and adjacent southwest Asia, mentioned in the Bible, having clusters of figs borne on short leafless twigs.
[Middle English sicamour, a kind of fig tree, from Old French sicamor, from Latin sȳcomorus, from Greek sūkomoros, perhaps of Semitic origin; see qwm in the Appendix of Semitic roots.]
(click for a larger image)sycamore
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The American Heritage Dictionary Blog
Check out our blog, updated regularly, for new words and revised definitions, interesting images from the 5th edition, discussions of usage, and more.
American Heritage Dictionary Products
The American Heritage Dictionary, 5th Edition
The American Heritage Dictionary of Idioms
The American Heritage Roget's Thesaurus
Curious George's Dictionary
The American Heritage Children's Dictionary
The American Heritage Dictionary of Indo-European Roots
The American Heritage Student Grammar Dictionary
The American Heritage Desk Dictionary + Thesaurus
The American Heritage Science Dictionary
The American Heritage Dictionary of Business Terms
The American Heritage Student Dictionary
The American Heritage Essential Student Thesaurus