泊
ハク, と.まる, と.める, とまり, はつ

overnight, put up at, ride at anchor, 3-day stay

JLPT2 G7 S8 F1233

As per 白# (scatter) + 水 water → tethered rafts/boats scattered over the surface of water (compare 舶) → *be anchored*; *wharf*; *lodge*; *overnight stay*; *shoal*; *shallow lake*; *shallows*.

[Full Kanji Etymology List]