gill 2 
(jĭl)
(jĭl)n. Abbr. gi or gi.
1. A unit of volume or capacity in the US Customary System, used in liquid measure, equal to 1/4 of a pint or four ounces (118 milliliters).
2. A unit of volume or capacity, used in dry and liquid measure, equal to 1/4 of a British Imperial pint (142 milliliters).
[Middle English gille, from Old French, wine measure, from Late Latin gillō, vessel for cooling liquids.]