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the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose; "he gave me an assist with the housework"; "could not walk without assistance"; "rescue party went to their aid"; "offered his help in unloading"
the position on a baseball team of the player who is stationed behind home plate and who catches the balls that the pitcher throws; "a catcher needs a lot of protective equipment"; "a catcher plays behind the plate"