Noun
(Australia, UK, New Zealand) A length of sawn wood of cross section 4 inches by 2 inches, most often employed as structural framing lumber / timber.
(UK, Australia, military) A cotton cloth 4 inches wide with lines two inches apart, conveniently torn into two inch lengths for cleaning a rifle barrel using a pull through.
(Cockney rhyming slang) A Jew.
four-by-two (plural four-by-twos)
Alternative form of four by two
four-by-two