歙
キュウ, キョウ, ショウ, す.う

come together, meet, put away, store

JLPT0 G13 S0 F5000

As per 翕# (press) + 欠 bent, open-mouthed figure → press the diaphragm to *suck in the breath*. Compare 吸, 哈 and 噏.

[Full Kanji Etymology List]