AN n. 2 definitions
d 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 equivalent to each, every.
ANA adv. 3 definitions
Of each; an equal quantity; as, wine and honey, ana (or, contracted, aa), ., that is, of wine and honey, each, two ounces. An apothecary with a . . . long bill of anas. Dryden.
AND conj. 4 definitions
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.