(1):

(n.) An English coin, formerly of copper, now of bronze, the twelfth part of an English shilling in account value, and equal to four farthings, or about two cents; - usually indicated by the abbreviation d. (the initial of denarius).

(2):

(n.) Any small sum or coin; a groat; a stiver.

(3):

(a.) Worth or costing one penny.

(4):

(a.) Denoting pound weight for one thousand; - used in combination, with respect to nails; as, tenpenny nails, nails of which one thousand weight ten pounds.

(5):

(n.) See Denarius.

(6):

(n.) Money, in general; as, to turn an honest penny.