concavern.
/ˈkɒnkeɪvə/ 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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n.1921