from
The Collaborative International Dictionary of English v.0.48
Bosh \Bosh\, n.; pl. {Boshes}. [Cf. G. b["o]schung a slope.]
[1913 Webster]
1. One of the sloping sides of the lower part of a blast
furnace; also, one of the hollow iron or brick sides of
the bed of a puddling or boiling furnace.
[1913 Webster]
2. pl. The lower part of a blast furnace, which slopes
inward, or the widest space at the top of this part.
[1913 Webster]
3. In forging and smelting, a trough in which tools and
ingots are cooled.
[1913 Webster]