a hinged seat, as in a taxicab or bus, that may be pulled down for use when an additional seat is needed.
a rear panel, as on long one-piece underwear or children's pajamas, that may be opened and lowered separately.
Words nearby drop seat
Origin of drop seat
First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020