the fruit of an oak tree, consisting of a smooth thick-walled nut in a woody scaly cuplike base
WordReference Random House Learner's Dictionary of American English © 2025
WordReference Random House Unabridged Dictionary of American English © 2025
a•corn
(ā′kôrn, ā′kərn),USA pronunciation n.
a′corned, adj.
- Plant Biologythe typically ovoid fruit or nut of an oak, enclosed at the base by a cupule.
- Furniturea finial or knop, as on a piece of furniture, in the form of an acorn.
- Gmc *akrana-; alleged derivation from base of acre is dubious if original reference was to wild trees
- bef. 1000; Middle English acorne (influenced by corn), replacing akern, Old English æcern, æcren mast, oak-mast; cognate with Old Norse akarn fruit of wild trees, Middle High German ackeran acorn, Gothic akran fruit, yield
Collins Concise English Dictionary © HarperCollins Publishers::
'acorn' also found in these entries (note: many are not synonyms or translations):
acorn barnacle
- acorn chair
- acorn clock
- acorn spoon
- acorn squash
- acorn sugar
- acorn tube
- acorn worm
- acre
- balanoid
- barnacle
- cupule
- enteropneust
- gland
- glanders
- glandular
- glans
- hemichordate
- juglandaceous
- myrobalan
- nut
- oak
- quercitol
- valonia