\Com*pos"ing\, a.
1. Tending to compose or soothe.
2. Pertaining to, or used in, composition.
{Composing frame} (Print.), a stand for holding cases of type
   when in use.
{Composing rule} (Print.), a thin slip of brass or steel,
   against which the type is arranged in a composing stick,
   or by the aid of which stickfuls or handfuls or type are
   lifted; -- called also {setting rule}.
{Composing stick} (Print.), an instrument usually of metal,
   which the compositor holds in his left hand, and in which
   he arranges the type in words and lines. It has one open
   side, and one adjustable end by means of which the length
   of the lines, and consequently the width of the page or
   column, may be determined.