corn of all sorts, as barley, oats, rye, &c. See CORN, WHEAT, &c.

Grain is also the name of a small weight, the twentieth part of a scruple in apothecaries weight, and the twenty-fourth of a pennyweight troy.

A grain-weight of gold-bullion is worth two-pence, and that of silver but half a farthing.

Grain also denotes the component particles of stones and metals, the veins of wood, &c. Hence cross-grained, or against the grain, means contrary to the fibres of wood, &c.