ACORN
Meaning of ACORN in English
a ‧ corn /ˈeɪkɔːn $ -ɔːrn, -ərn/ BrE AmE noun [countable]
[ Language: Old English ; Origin: æcern ]
the nut of the ↑ oak tree
Longman Dictionary of Contemporary English.
Longman - Словарь современного английского языка.
2012