| cachalot | (noun) large whale with a large cavity in the head containing spermaceti and oil; also a source of ambergris | Synonyms: black whale, Physeter catodon, sperm whale |
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| cache | (noun) a hidden storage space (for money or provisions or weapons) | - |
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| (noun) (computer science) RAM memory that is set aside as a specialized buffer storage that is continually updated; used to optimize data transfers between system elements with different characteristics | Synonyms: memory cache |
| (noun) a secret store of valuables or money | Synonyms: hoard, stash |
| (verb) save up as for future use | Synonyms: hive up, hoard, lay away, squirrel away, stash |
| cachectic | (adjective) relating to or having the symptoms of cachexia | - |
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| cachet | (noun) a seal on a letter | - |
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| (noun) an indication of approved or superior status | Synonyms: seal, seal of approval |
| (noun) a warrant formerly issued by a French king who could warrant imprisonment or death in a signed letter under his seal | Synonyms: lettre de cachet |
| cachexia | (noun) any general reduction in vitality and strength of body and mind resulting from a debilitating chronic disease | Synonyms: cachexy, wasting |
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| cachexy | (noun) any general reduction in vitality and strength of body and mind resulting from a debilitating chronic disease | Synonyms: cachexia, wasting |
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| cachinnate | (verb) laugh loudly and in an unrestrained way | - |
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| cachinnation | (noun) loud convulsive laughter | - |
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| cachou | (noun) a scented lozenge used to sweeten the breath (e.g. to conceal the odor of tobacco) | - |
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