■ noun
1》 a cylinder that rotates about a central axis and is used in various machines and devices to move, flatten, or spread something.
2》 a small cylinder around which hair is rolled in order to produce curls.
3》 (also ~ bandage ) a long surgical bandage rolled up for convenient application.
4》 a long swelling wave that appears to roll steadily towards the shore.
5》 a brightly coloured crow-sized bird, predominantly blue and having a characteristic tumbling display flight. [ Coracias garrulus and other species.]
6》 a breed of tumbler pigeon.
7》 a breed of canary with a trilling song.