床 floor

(cave) + 木 (tree)

Onyomi

Mnemonic

This tree was growing on the floor of a cave without sunlight! (FYI it turned out to be a plastic Xmas tree)

Kunyomi

ゆか	the floor ★★★☆☆

Lookalikes

	Meaning	Hint	Radical
床	floor	WOOD	木
底	bottom	SPECULUM	氏

The floor is made of WOOD

but the SPECULUM probes to the very bottom of the hoo-hoo.