AN n.
This word is properly an adjective, but is commonly called the indefinite article. It is used before nouns of the singular number only, and signifies one, or any, but somewhat less emphatically. In such expressions as "twice an hour," "once an age," a shilling an ounce (see 2d A, 2), it has a distributive force, and is…
AND conj.
If; though. See An, conj. [Obs.] Chaucer. As they will set an house on fire, and it were but to roast their eggs. Bacon. And so forth, and others; and the rest; and similar things; and other things or ingredients. The abbreviation, etc. (et cetera), or &c., is usually read and so forth.