за ухо

behind the ear

→ за

phrase Rare #54,052

behind the ear The ending changes with context: за ухом means “behind the ear,” while за ухо can mean “by the ear” when describing an action such as biting or pulling.

RU: Он спрятал карандаш за ухо.

EN: He tucked a pencil behind his ear.

Ты кусала его за ухо.

You bit his ear.

— Карандиру (2003)