expression, ichidan verb
stare at; glare at; fix one's eyes on
Often implies a hostile or challenging stare, especially in delinquent or rough contexts. The phrase is a set expression, not a literal 'attach eyes'.
あの不良はすれ違いざまに俺にガンをつけてきた。
That punk glared at me as we passed each other.
知
I feel uncomfortable being stared at by a stranger.