/rɒk ||; rɑk/noun1 [U] the hard, solid material that forms part of the surface of the earth 岩石: layers of rock formed over millions of years 经过几百万年形成的岩层 ☞picture on page 1005
2 [C] [usu.pl] a large mass of rock that sticks out of the sea or the ground （突出海水或地面的）礁石，岩壁: The ship hit the rocks and started to sink. 那艘船触礁，开始下沉。
3 [C] a single large piece of rock 巨石: The beach was covered with rocks that had broken away from the cliffs. 海滩上布满从崖上崩落的大石。
4 [C] (US 美) a small piece of rock that can be picked up; a stone 石子；石头: The boy threw a rock at the dog. 那男孩朝狗扔石子。
5 (also rock music) [U] a type of pop music with a very strong beat, played on electric guitars, etc 摇滚乐: I prefer jazz to rock. 我喜欢爵士乐多于摇滚乐。a rock singer/band 摇滚乐歌手╱乐队 ☞Look at classical, jazz and pop. 参看classical、jazz及pop。
6 [U] (Brit 英) a type of hard sweet made in long, round sticks 硬棒糖
on the rocks 1 (used about a marriage, business, etc) having problems and likely to fail （指婚姻、生意等）濒临失败，触礁
2 (used about drinks) served with ice but no water （指饮料）加冰块而不加水: whisky on the rocks 加冰块的威士忌酒