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The fruit of an oak, consisting of a single-seeded, thick-walled nut set in a woody, cuplike base.
[Middle English akorn, from Old English æcern.]
Word History: A thoughtful glance at the word acorn might produce the surmise that it is made up of oak (from Old English āc) and corn, especially if we think of corn in its sense of "a kernel or seed of a plant," as in peppercorn. The fact that others thought the word was so constituted partly accounts for the present form acorn. Here we see the workings of the process of linguistic change known as folk etymology, an alteration in form of a word or phrase so that it resembles a more familiar term mistakenly regarded as analogous. Acorn actually goes back to Old English æcern, "acorn," which in turn goes back to the Indo-European root *ōg-, meaning "fruit, berry."
(Botany) the fruit of an oak tree, consisting of a smooth thick-walled nut in a woody scaly cuplike base
[C16: a variant (through influence of corn) of Old English æcern the fruit of a tree, acorn; related to Gothic akran fruit, yield]
a•corn(ˈeɪ kɔrn, ˈeɪ kərn)
the typically ovoid fruit or nut of an oak, enclosed at the base by a cupule.
[before 1000; Middle English acorne (influenced by corn1), akern, Old English æcern, æcren mast, c. Middle High German ackeran acorn, Old Norse akarn fruit of wild trees, Gothic akran fruit, yield]
Switch to new thesaurus
|Noun||1.||acorn - fruit of the oak tree: a smooth thin-walled nut in a woody cup-shaped base|
oak tree, oak - a deciduous tree of the genus Quercus; has acorns and lobed leaves; "great oaks grow from little acorns"
fruit - the ripened reproductive body of a seed plant
acorn[ˈeɪkɔːn] N → bellota f
acorn[ˈeɪkɔːrn] n → gland m
n → Eichel f