a crosspiece spreading the gunnels of a boat; used as a seat in a rowboat
hinder or prevent (the efforts, plans, or desires) of; "What ultimately frustrated every challenger was Ruth's amazing September surge"; "foil your opponent"
the quality of being able to perform; a quality that permits or facilitates achievement or accomplishment
possession of the qualities (especially mental qualities) required to do something or get something done; "danger heightened his powers of discrimination"