n. The name of the letter R. Also formerly spelled arre.n. See arr.n. Obsolete forms of are, ere, or, ore, etc.n. The assimilated form, in Latin, etc., of ad-before r; in older English words a restored form of Middle English and Old French a-, the regular reduced form of Latin ar-, as in array, arrange, etc.n. A suffix of nouns denoting an agent; a variant of -er, as in beggar, liar, formerly and properly begger, etc.n. A suffix of Latin origin, occurring in some nouns, as in bursar, medlar, mortar, vicar, etc.n. A suffix, of Latin origin, of adjectives (and of nouns thence derived), being equivalent to -al, for which it is used when l precedes, as in alar, polar, regular, singular, etc. (see -al, and compare -ar); of nouns, as in altar, collar, pillar, scholar, etc.n. In heraldry, a common abbreviation of argent.A simplified spelling of are.etc. Points of flexure in the curves of cooling of iron and steel.