桶
tǒng · HSK 7
bucket
🪣 桶 = 木 wood radical + 通 tōng (sound clue); a wooden bucket
The 木 on the left tells you it is made of wood, the classic material for a barrel or bucket. The right side 通 is pronounced tōng and just lends the sound, giving tǒng.
桶 — wood radical 木 + 甬 (yǒng, phonetic)
桶 is a semantic-phonetic compound. The wood radical 木 signals the meaning — a container traditionally made of wood — while 甬 supplies the sound, related to the modern reading tǒng. It originally referred to wooden buckets or barrels, and now denotes buckets and tub-shaped containers in general.