1.
with a piercing glare, with a sharp look
Describes the action of looking at someone with a sharp, intimidating, or disapproving gaze. A single, deliberate stare rather than repeated glancing.
Related words
ジロリ describes a single sharp glare. The repeated form ジロジロ describes staring persistently or rudely — looking someone up and down. ジロリ is a momentary piercing look; ジロジロ is prolonged and impolite staring.
Common patterns
Used with と: ジロリと見る (to glare at), ジロリとにらむ (to stare menacingly).