castling

From WikiWord, the free dictionary

/ˈkɑːstlɪŋ/ English

Definitions

An abortion, or a premature birth.“1646: Wherein notwithstanding, we should rather rely upon the urine in a castling’s bladder — Sir Thomas Browne, Pseudodoxia Epidemica, Book II, ch 5”
The second or third swarm of bees which leaves a hive in a season.
A miniature cast or mould.
One that is cast.

To house or keep in a castle.
To protect or separate in a similar way.
To make into a castle: to build in the form of a castle or add (real or imitation) battlements to an existing building.
(usually intransitive) To move the king 2 squares right or left and, in the same turn, the nearest rook to the far side of the king. The move now has special rules: the king cannot be in, go through, or end in check; the squares between the king and rook must be vacant; and neither piece may have been moved before castling.

A move in which the king moves two squares towards a rook, and the rook moves to the other side of the king; the action of the verb to castle.
The act of constructing a defense structure in Japanese chess in which the king (玉) is positioned in a certain way so that it is protected by pawns (歩) and silver general(s) (銀) and/or gold general(s) (金) often with an additional knight (桂) and lance (香車).