acorn

3 definitions • 1 example

an oval nut that grows on an oak tree and has an outer part shaped like a cup

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

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.