Definitions
1.nounA triangular space between the sides of a pediment.
2.nounThe space within an arch, and above a lintel or a subordinate arch, spanning the opening below the arch.
3.nounThe middle ear.
4.nounThe eardrum.
5.nounA hearing organ in frogs, toads and some insects.
6.nounIn certain birds, the labyrinth at the bottom of the windpipe.
7.nounA drum-shaped wheel with spirally curved partitions by which water is raised to the axis when the wheel revolves with the lower part of the circumference submerged; used for raising water, as for irrigation.