Noun
(Scotland) Obsolete spelling of plout [18 C.]
(Northern Ireland) Alternative spelling of plout [20 C. onward]
ploot (plural ploots)
Alternative spelling of plute [20 C. onward]
The first 35mm SLR available to the mass market, Leica's PLOOT reflex housing along with a 200mm f4.5 lens paired to a 35mm rangefinder camera body, debuted in 1935. Source: Internet