What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
A trademark for: a type of electric food mixer.
1940s; earliest use found in The New York Times Magazine. From the name of John Oster (d. 1963), founder (in 1924) of the John Oster Manufacturing Company which produced this type of mixer in 1946 + -izer.