Definition of bosh

• n. - Figure; outline; show.
• n. - Empty talk; contemptible nonsense; trash; humbug.
• n. - 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.
• n. - The lower part of a blast furnace, which slopes inward, or the widest space at the top of this part.
• n. - In forging and smelting, a trough in which tools and ingots are cooled.
• n. - Figure; outline; show.
• n. - Empty talk; contemptible nonsense; trash; humbug.
• n. - 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.
• n. - The lower part of a blast furnace, which slopes inward, or the widest space at the top of this part.
• n. - In forging and smelting, a trough in which tools and ingots are cooled.