ROTTEN a.
Not firm or trusty; unsound; defective; treacherous; unsafe; as, a rotten plank, bone, stone. "The deepness of the rotten way." Knolles. Rotten borough. See under Borough. -- Rotten stone (Min.), a soft stone, called also Tripoli (from the country from which it was formerly brought), used in all sorts of finer grindin…