| 单词 | ratchet |
| 释义 | ratchet /rach"it/, n. 1. a toothed bar with which a pawl engages. 2. (not in technical use) a pawl or the like used with a ratchet or ratchet wheel. 3. a mechanism consisting of such a bar or wheel with the pawl. 4. See ratchet wheel. 5. a steady progression up or down: the upward ratchet of oil prices. v.t. , v.i. 6. to move by degrees (often fol. by up or down): to ratchet prices up; Interest rates have been ratcheting downward. [1650-60; alter. of F rochet; MF rocquet a blunt lance-head < Gmc] |
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