noun
looking aside; looking away
Refers to the act of glancing sideways or diverting one's gaze, often used in phrases like 脇目も振らず (without looking aside, single-mindedly).
彼は脇目も振らずに仕事に没頭した。
He devoted himself to his work without looking aside.
noun
outsider's view; eyes of an onlooker
Used to describe how something appears to a third party or bystander, often in expressions like 脇目には (to an onlooker).
To an onlooker, his behavior seemed strange.
Compound of 脇 (わき, side) and 目 (め, eye). The exact historical derivation is uncertain, but the meaning follows naturally from the components.