(1):

(n.) A minute quantity; a mite.

(2):

(n.) A weight; in Apothecaries' weight, one eighth part of an ounce, or sixty grains; in Avoirdupois weight, one sixteenth part of an ounce, or 27.34375 grains.

(3):

(n.) As much spirituous liquor as is usually drunk at once; as, a dram of brandy; hence, a potation or potion; as, a dram of poison.

(4):

(n.) A Persian daric.

(5):

(v. i. & t.) To drink drams; to ply with drams.