Bosh

1. Figure; outline; show. [Obs.]

1. Empty talk; contemptible nonsense; trash; humbug. [Colloq.]

pl. Boshes

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.
2. The lower part of a blast furnace, which slopes inward, or the widest space at the top of this part.
3. In forging and smelting, a trough in which tools and ingots are cooled.