ὠλκα

ἀvḷκα

A. = ἄλοξ, αὖλαξ, furrow, Il. 13.707, Od. 18.375, Mosch. 2.81, A.R. 3.1054, 1333. (κατὰ ὦλκα Il. l. c. has perh. replaced κατ’ Ἄvολκα which may have been an old Aeol. form (ἀvḷκα).)
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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