| plum | the light horny waterproof structure forming the external covering of birds |
|---|---|
| plum | often used as combining forms |
| plum | (biology) having an ornamental plume or feathery tuft |
| plum | the metal bob of a plumb line |
| plum | adjust with a plumb line so as to make vertical |
| plum | examine thoroughly and in great depth |
| plum | measure the depth of something |
| plum | weight with lead |
| plum | exactly vertical |
| plum | (slang) completely |
| plum | (informal) exactly |
| plum | conforming to the direction of a plumb line |