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 Englishsmorther dense smoke; akin to Old Englishsmorian to suffocate; (v.) Middle Englishsmo(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
"stifle, repress" is first recorded 1579; meaning "to cover thickly (with some substance)" is from 1598.