first in quality or value; first-rate

fundamental; original

first in importance, authority, etc; chief

having the best credit rating

the time when a thing is at its best

a period of power, vigour, etc, usually following youth (esp in the phrase the prime of life)

the beginning of something, such as the spring

a semantically indivisible element; minimal component of the sense of a word

the second of the seven canonical hours of the divine office, originally fixed for the first hour of the day, at sunrise

the first of eight basic positions from which a parry or attack can be made in fencing

to prepare (something); make ready

to apply a primer, such as paint or size, to (a surface)

to fill (a pump) with its working fluid before starting, in order to improve the sealing of the pump elements and to expel air from it before starting

to increase the quantity of fuel in the float chamber of (a carburettor) in order to facilitate the starting of an engine

to insert a primer into (a gun, mine, charge, etc) preparatory to detonation or firing

(of a steam engine or boiler) to operate with or produce steam mixed with large amounts of water

to provide with facts, information, etc, beforehand; brief