adverb, noun or participle which takes 'suru'
Describes something pulled tight, stretched, or held in a tense state. Often used with verbs like 張る (to stretch) or する (to make taut).
See also: ピンと張る
ロープをピンと張ってください。
Please pull the rope taut.
彼は背筋をピンと伸ばした。
He straightened his back tensely.
adverb, noun or participle which takes 'suru'
springing up; straightening up; suddenly; with a jerk
Describes a quick, sharp movement of something springing or straightening up, like a plant stem or a person's posture. Also used for sudden, jerky motions.
See also: ピンと立てる
花の茎がピンと立っている。
The flower stem is standing up straight.
彼は驚いてピンと飛び起きた。
He sprang up with a jerk in surprise.
adverb
intuitively; instinctively; immediately
Used almost exclusively in the phrase ピンとくる to mean 'to have a flash of intuition', 'to get it immediately', or 'to be struck by something'. Not used as a standalone adverb for 'intuitively'.
See also: ピンとくる
彼の説明を聞いて、すぐにピンときた。
When I heard his explanation, I got it immediately.
このアイデアはあまりピンとこない。
This idea doesn't really click with me.
adverb
with a snap; with a crack; with a twang; with a burst
Describes a sudden, sharp sound or action, like a string snapping, a whip cracking, or something bursting. Often used with verbs like 切れる (to snap) or はじける (to burst).
ギターの弦がピンと切れた。
The guitar string snapped with a twang.
風船がピンとはじけた。
The balloon burst with a pop.