In some two-piece fittings there is a male and female part. The male part will fit into the female part e.g. a male screw thread fits into a female thread.
A design of roof made up of four sloping sides, but with each plane becoming steeper halfway down.
A rectangular recess into which a matching rectangular peg fits to form a joint e.g. a mortise and tenon joint or a mortise lock.
A length of string weighted at one end used to feed cable through narrow vertical gaps. With one end of the string tied securely to the cable, the weighted end is dropped down the narrow gap. The weight will end up at the bottom of the narrow gap enabling you to pull the cable through.
The vertical section that divides a window frame.
The central vertical section of a panel door.