stop up phrasal verbphr v a)BLOCK 堵塞 stop something ↔ up to block a hole or pipe so that water, smoke etc cannot go through it 堵塞,堵住〔洞、管子,以防水、烟等通过〕
b) British EnglishBrE informalLATE to stay up late 熬夜,迟睡 Joe stopped up till 3 o’clock to watch the boxing. 乔熬夜看拳击到3点钟才睡觉。
→ stop up at stop1(PHRASAL VERB)