ガイ, カイ, コウ, ふた, けだ.し, おお.う, かさ, かこう

cover, lid, flap

JLPT0 G7 S13 F2388

# (press down and) cover + 艸 grass/plant → roof thatched/covered with grass → *cover*; *lid*.

[Full Kanji Etymology List]