| a gadget; dingus; thingumbob. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
wrist (rɪst) ![]() | |
| —n | |
| 1. | anatomy Technical name: carpus the joint between the forearm and the hand |
| 2. | the part of a sleeve or glove that covers the wrist |
| 3. | machinery |
| a. See wrist pin | |
| b. a joint in which a wrist pin forms the pivot | |
| [Old English; related to Old High German, Old Norse rist. See | |
wrist
complex joint between the five metacarpal bones of the hand and the radius and ulna bones of the forearm. The wrist is composed of eight or nine small, short bones (carpal bones) roughly arranged in two rows. The wrist is also made up of several component joints: the distal radioulnar joint, which acts as a pivot for the forearm bones; the radiocarpal joint, between the radius and the first row of carpal bones, involved in wrist flexion and extension; the midcarpal joint, between two of the rows of carpal bones; and various intercarpal joints, between adjacent carpal bones within the rows. The numerous bones and their complex articulations give the wrist its flexibility and wide range of motion
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