Schwalch

Etymology 1
, possibly ablauting to.

Noun

 * 1)  fume, vapour

Etymology 2
From, , of provenience, probably ablauting to  since  also means the upmost part of the oesophagus and the verbal noun of , or a variant of.

Noun

 * 1)  the opening of a smelting furnace through which the flame hits the metal