ガンつける

expression, ichidan verb

stare at; glare at; fasten one's eyes on

Colloquial expression, often with a nuance of glaring or staring intently at someone, sometimes with hostility or challenge.

See also: 眼をつける

• あいつ、ずっとこっちをガンつけてるよ。

  That guy has been staring at me the whole time.

• ガンつけるなよ。

  Don't glare at me.