also: びっしゃり
adverb
slapping together; with a slap
Describes the sound or action of flat surfaces hitting each other firmly, such as hands clapping or a door shutting with a slap.
彼は手をぴっしゃりと合わせた。
He brought his hands together with a slap.
本をぴっしゃりと閉じた。
I shut the book with a slap.
adverb
fitting tightly; snugly
Describes something fitting perfectly and tightly, often with a slight sound, like a lid closing snugly or clothes fitting closely.
蓋がぴっしゃりと閉まった。
The lid closed tightly with a snap.
その服は体にぴっしゃりと合っている。
The clothes fit snugly against the body.