From WordNet (r) 2.0 (August 2003) [wn]:
hin
n : ancient Hebrew unit of liquid measure = 1.5 gallons
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Hin \Hin\ (h[i^]n), n. [Heb. h[imac]n.]
A Hebrew measure of liquids, containing three quarts, one
pint, one gill, English measure. --W. H. Ward.
[1913 Webster]