| 单词 | concaver | 
| 释义 | concavern.  One who hollows out the sides of a boot last. ΚΠ 1921    Dict. Occup. Terms 		(1927)	 §486  				Concaver, last concaver..hollows out sides of boot last by holding wood against shaped power-driven cutter. This entry has not yet been fully updated (first published 1933; most recently modified version published online December 2021). < | 
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