One of the leaves of a folding-door, or a window-sash.
One of the pieces or divisions of bivalve or multivalve shells.
One of the pieces into which certain fruits naturally separate when they dehisce.
One of the two similar portions of the shell of a diatom.
A device that admits fuel and air into the cylinder of an internal combustion engine, or one that allows combustion gases to exit.
A device that controls the flow of a gas or fluid through a pipe.
One or more membranous partitions, flaps, or folds, which permit the passage of the contents of a vessel or cavity in one direction, but stop or control the flow in the opposite direction
A vacuum tube.
A small portion of certain anthers, which opens like a trapdoor to allow the pollen to escape, such as in the barberry.
To control (flow) by means of a valve.
A small door or gate, especially one beside a larger one.
An angle bracket when used in HTML.
Any of the small arches through which the balls are driven.
A temporary metal attachment that one attaches one's lift-ticket to.
A small window or other opening, sometimes fitted with a grating.
A device to measure the height of animals, usually dogs.
A service window, as in a bank or train station, where a customer conducts transactions with a teller
A dismissal; the act of a batsman getting out.
The pitch.
a ticket barrier at a rail station, box office at a cinema, etc.
One of the two wooden structures at each end of the pitch, consisting of three vertical stumps and two bails; the target for the bowler, defended by the batsman.
The area around the stumps where the batsmen stand.
A shelter made from tree boughs, used by lumbermen.
The period during which two batsmen bat together.
The space between the pillars, in post-and-stall working.