a life preserver consisting of a connected pair of inflatable bags that fit under a person's arms and provide buoyancy; used by children learning to swim
a pernicious and malign influence that is hard to get rid of; "racism is a pestilence at the heart of the nation"; "according to him, I was the canker in their midst"
open land usually with peaty soil covered with heather and bracken and moss
one of the Muslim people of north Africa; of mixed Arab and Berber descent; converted to Islam in the 8th century; conqueror of Spain in the 8th century
secure with cables or ropes; "moor the boat"
come into or dock at a wharf; "the big ship wharfed in the evening"
secure in or as if in a berth or dock; "tie up the boat"