(1):

(n.) A small elementary book for teaching children to read; a reading or spelling book for a beginner.

(2):

(n.) Originally, a small prayer book for church service, containing the little office of the Virgin Mary; also, a work of elementary religious instruction.

(3):

(n.) One who, or that which, primes

(4):

(n.) an instrument or device for priming; esp., a cap, tube, or water containing percussion powder or other compound for igniting a charge of gunpowder.

(5):

(a.) First; original; primary.

(6):

(n.) A kind of type, of which there are two species; one, called long primer, intermediate in size between bourgeois and small pica [see Long primer]; the other, called great primer, larger than pica.