Meaning of “acorn” in the English Dictionary

"acorn" in American English

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acornnoun [ C ]

us /ˈeɪ·kɔrn, -kərn/

the fruit of the oak tree, consisting of an oval nut with a top shaped like a cup

(Definition of “acorn” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"ACORN" in Business English

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ACORNnoun [ S ]

uk /ˈeɪkɔːn/ us

abbreviation for A Classification of Residential Neighbourhoods: a system of information about how much people earn, their social class, etc. that includes all areas in the UK:

A company's targeting of consumers is often based on ACORN.

(Definition of “ACORN” from the Cambridge Business English Dictionary © Cambridge University Press)