ἵν

indecl., τό
ἵν or εἵν, gen. εἱνός,τό, an Egyptian and Jewish liquid measure, LXX Ex. 29.40, al., J. AJ 3.9.4, Eust. 1282.51 (indecl. in LXX ll. cc.); cf. ἵνιον.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project