1. block or shut;seal堵住;封住
The opening in the wall has now been closed up. 牆上的洞被堵住了。
We must close up the old well. It's too dangerous. 我們必須把這口舊井封起來,它太危險了。
2. heal up;close completely愈合
Don't worry. Your wound is closing up nicely. 不要擔心,你的傷口愈合得很好。
This kind of ointment will help to close up your burns. 這種藥膏會有助于你燒傷傷口的愈合。
3. shut up停業;關閉
Business declined to such an extent that the store closed up last month. 生意清淡到這個地步,那家商店上個月只好關門大吉。
The shop is closing up. I must ask you to leave. 商店就要關門了,我只好請你們離開。
4. come or bring closer together in a line or lines把隊伍靠緊
The sergeant told the men to close up their ranks. 軍士命令士兵把隊伍排緊些。