An example of an acorn is a nut that a squirrel eats once it has fallen from the oak tree.
Origin of acorn
- Middle English akorn from Old English æcern
From American Heritage Dictionary of the English Language, 5th Edition
- Middle English acorne, an alteration (after corn) of earlier akern, from Old English æcern (“acorn, oak-mast”), from Proto-Germanic *akraną, from Proto-Indo-European *h₂ógeh₂- (“berry”). Cognate with Saterland Frisian Äkkene, Flemish aker, Danish agern; and with Irish áirne (“sloe”), Lithuanian úoga, Russian ягода (jágoda, “berry”).