work for or be a servant to
give help or assistance; be of service
the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose
act as an assistant in a subordinate or supportive function
(sports) the act of enabling another player to make a good play
be a hindrance or obstacle to
put at a disadvantage
hinder or prevent the progress or accomplishment of
located at or near the back of an animal
