a smoking or smoldering state, as of burning matter.
10.
dust, fog, spray, etc., in a dense or enveloping cloud.
11.
an overspreading profusion of anything: a smother of papers.
Origin: 1125–75; (noun) Middle English smorther dense smoke; akin to Old English smorian to suffocate; (v.) Middle English smo(r)theren, derivative of the noun
c.1200, "to suffocate with smoke," from smorthre (n.) "dense, suffocating smoke" (c.1175), from stem of O.E. smorian "to suffocate, choke," possibly connected to smolder. Meaning "to kill by suffocation" is from 1548; sense of "to extinguish a fire" is from 1591. Sense of