咽
イン, エン, エツ, むせ.ぶ, むせ.る, のど, の.む
choked, smothered, stuffy
JLPT0 G7 S9 F5000
As per
因
# (superimpose) +
口
mouth → food superimposed over the pharynx in swallowing → *swallow* (compare
嚥
) → *throat*. Also, *choke*.
[Full Kanji Etymology List]