| 单词 | tuff |
| 释义 | tuff tuff1 /tuf/, adj. Slang. tough (def. 13). tuff2 —tuffaceous /tu fay"sheuhs/, adj. /tuf/, n. Geol. a fragmental rock consisting of the smaller kinds of volcanic detritus, as ash or cinder, usually more or less stratified. Also called volcanic tuff. [1560-70; < F tuf < It tufo. See TUFA] |
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