| 单词 | sap |
| 释义 | sap 1. n. & v. --n 1. the vital juice circulating in plants. 2. vigour; vitality. 3. = SAPWOOD. 4. US sl. a bludgeon (orig. one made from a sapling). --vtr. (sapped, sapping) 1. drain or dry (wood) of sap. 2. exhaust the vigour of (my energy had been sapped by disappointment). 3. remove the sapwood from (a log). 4. US sl. hit with a sap. Phrases and idioms sap-green n. 1. the pigment made from buckthorn berries. 2. the colour of this. --adj of this colour. Derivatives sapful adj. sapless adj. Etymology: OE s{aelig}p prob. f. Gmc 2. n. & v. --n 1. a tunnel or trench to conceal assailants' approach to a fortified place; a covered siege-trench. 2. an insidious or slow undermining of a belief, resolution, etc. --v (sapped, sapping) 1. intr. a dig a sap or saps. b approach by a sap. 2. tr. undermine; make insecure by removing the foundations. 3. tr. destroy insidiously. Etymology: ult. f. It. zappa spade, spadework, in part through F sappe sap(p)er, prob. of Arab. orig. 3. n. sl. a foolish person. Etymology: abbr. of sapskull f. SAP(1) = sapwood + SKULL |
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