1. A unit of volume used in the United States for the measurement of liquid substances, equal to ¹/₄ U.S. liquid pint, or to 1.1829411825 × 10^-4 cubic meter.

2. A unit of volume used in the United Kingdom for the measurement of liquid substances, and occasionally of solid substances, equal to ¹/₄ U.K. pint, or to approximately 1.42065 × 10^-4 cubic meter.

A structure consisting of radially arranged rows of tissue that hang from the underside of the mushroom cap of certain basidiomycetes.

The respiratory organ of water-breathing animals. Also known as branchia.