cap screw noun

A bolt with a threaded shaft and cylindrical head with a hexagonal indentation for turning it

cap sleeve noun

A short sleeve, just covering the shoulder

capˈstone noun

1. A coping-stone
2. The top or finishing stone of a structure
3. A stone slab laid flat over the top of a cist (archaeology)
4. The horizontal stone of a dolmen (archaeology)
5. A flat stone acting as a cap, eg to a shaft or chimney

black cap see under black

cap and bells

The insignia of a professional jester

cap and collar mortgage

One having a minimum (collar) and maximum (cap) rate of interest

cap in hand

1. Submissively
2. Supplicatingly

cap of liberty

The conical cap, usu made of red material, given to a Roman slave on enfranchisement, and adopted during the French revolution as an emblem of freedom, now the symbol of republicanism

cap of maintenance see under maintain

cap verses

To quote verses in turn, according to rule

college cap

A mortarboard or trencher cap

set one's cap at

(of a woman) to set oneself to captivate (a man)

the cap fits

The allusion is felt to apply

throw up one's cap

To make this gesture (lit or figurative) in token of immoderate joy

to cap it all

As a (frequently unpleasant) climax

socket /sokˈit/

1. A hollow into which something is inserted or into which something fits, such as the receptacle of the eye, of a bone, of a tooth, of the shaft of an iron golf club, the hollow of a candlestick, etc
2. A device in which an electric plug or light bulb may be inserted to make a connection
3. A stroke with the socket of a golf club

1. To provide with or place in a socket
2. To strike with the socket (golf)

sockˈeted adjective

socket chisel noun

A robust chisel with a socketed metal shaft into which the wooden handle is fitted

socket head screw noun

A screw with a hexagonal recess in its head, turned by means of a hexagonal bar formed into a key (also cap screw)

socket set noun

A range of socketed heads for use with a socket wrench

socket spanner noun

A spanner with a socketed head made to fit over a nut or a bolt

socket wrench noun

A wrench with a handle to which a variety of socketed heads can be fitted