A mould or matrix in which something is cast or formed; a fossil. Also figurative. Obsolete.
| 单词 | θ17823 | 
| 释义 | the world > life > biology > organism > fossil > 			[noun]		 > track or cast (3)		 plasm1620 A mould or matrix in which something is cast or formed; a fossil. Also figurative. Obsolete. lebensspur1956 A track, burrow, cast, etc., left in sediment by a living organism; esp. such a trace preserved in fossil form in sedimentary rock (cf. trace fossil… trace fossil1957 a fossil that represents the burrowing or similar activity of an animal rather than the animal itself. | 
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