Lynbrook, village (1990 pop. 19,208), Nassau co., SE N.Y.; inc. 1911. It is a suburb of New York City on the south shore of Long Island. There is sheet-metal and furniture manufacture. Old Church dates from 1800. The area was settled in 1785 and was called Bloomfield. The name Lynbrook (formed by reversing the syllables in Brooklyn ) was adopted in 1895.