The Collaborative International Dictionary of English v.0.48:

Setting \Set"ting\, n.
   1. The act of one who, or that which, sets; as, the setting
      of type, or of gems; the setting of the sun; the setting
      (hardening) of moist plaster of Paris; the setting (set)
      of a current.
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   2. The act of marking the position of game, as a setter does;
      also, hunting with a setter. --Boyle.
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   3. Something set in, or inserted.
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            Thou shalt set in it settings of stones. --Ex.
                                                  xxviii. 17.
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   4. That in which something, as a gem, is set; as, the gold
      setting of a jeweled pin.
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   5. the time, place, and circumstances in which an event (real
      or fictional) occurs; as, the setting of a novel.
      [PJC]

   Setting coat (Arch.), the finishing or last coat of
      plastering on walls or ceilings.

   Setting dog, a setter. See Setter, n., 2.

   Setting pole, a pole, often iron-pointed, used for pushing
      boats along in shallow water.

   Setting rule. (Print.) A composing rule.
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The Collaborative International Dictionary of English v.0.48:

Composing \Com*pos"ing\, a.
   1. Tending to compose or soothe.
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   2. Pertaining to, or used in, composition.
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   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.
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