big ears; large ears
Literal description of ears that are physically large. Can be used for people, animals, or objects.
あの犬は大耳で、遠くの音もよく聞こえる。
That dog has big ears and can hear sounds from far away.
彼は大耳がコンプレックスだった。
He had a complex about his big ears.
noun, nari-adjective (archaic / formal)
hearing without listening; in one ear and out the other
Archaic noun/adjectival use for the act of listening without truly paying attention. Modern Japanese would more commonly use 聞き流す or 上の空.
According to old tales, a person who listens without paying attention was said to miss important things.
bat-eared fox
Compound of 大 (big) and 耳 (ear). The archaic sense likely developed from the image of having big ears that catch sound but do not retain it.