roll

中文： 卷、滚动、翻滚

1. The act or result of rolling, or state of being rolled. · the roll of a ball· Look at the roll of the waves.
2. Something formed into a compact shape by being rolled up. · a roll of banknotes
3. A forward or backward roll in gymnastics; going head over heels. A tumble.
4. A heavy cylinder used to break clods.
5. One of a set of revolving cylinders, or rollers, between which metal is pressed, formed, or smoothed, as in a rolling mill. · to pass rails through the rolls
6. A swagger or rolling gait.
7. A heavy, reverberatory sound. · Hear the roll of cannon.· There was a roll of thunder and the rain began to pour down.
8. The uniform beating of a drum with strokes so rapid as scarcely to be distinguished by the ear.

复数 rolls