牢[láo] 基本解释：
新英汉大词典：
- 牢[láo]
- 名词- （养牲畜的圈） fold; pen; stables:
pigpen;豕牢
mend the fold after a sheep is lost亡羊补牢
- （古代祭祀用的牲畜; 牺牲） animals for sacrificial rites; sacrifice:sacrificial ox;太牢
sacrificial sheep and pigs少牢
- （监狱） prison; jail:be in jail; be jailed; be put into prison; be imprisoned; be thrown into jail; be in prison坐牢
- （姓氏） a surname:Lao Cheng牢成
- 形容词- （牢固; 经久） firm; durable; fast:
The rope hasn't been tied fast.绳子没系牢。
The bed is rickety [unstable].这床不牢。
以上内容来源于：《新汉英大辞典》
例句与用法：
The post is fast in the ground.
The ship stuck fast on the bar.
Firm or compact in substance.
This glue sticks fast.
牢的其他解释: