abjectly submissive; characteristic of a slave or servant; "slavish devotion to her job ruled her life"; "a slavish yes-man to the party bosses"- S.H.Adams; "she has become submissive and subservient"
blindly imitative; "a slavish copy of the original"
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"