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Related to bosh: Bosch
Used to express disbelief or annoyance.
[Turkish boş, empty (popularized in English by its use in Ayesha, the Maid of Kars (1834), a novel set in the Near East by James Justinian Morier (1780-1849), British author); akin to Old Turkic boš, free, released.]
informal empty or meaningless talk or opinions; nonsense
[C19: from Turkish boş empty]
1. (Metallurgy) the lower tapering portion of a blast furnace, situated immediately above the air-inlet tuyères
2. (Metallurgy) the deposit of siliceous material that occurs on the surfaces of vessels in which copper is refined
3. (Metallurgy) a water tank for cooling glass-making tools, etc
4. dialect South Wales a kitchen sink or wash basin
[C17: probably from German; compare böschen to slope, Böschung slope]
[1830–35; < Turkish boş empty]
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|Noun||1.||bosh - pretentious or silly talk or writing|