Pronunciation: (haf'bak", häf'-), [key]
a. one of two backs who typically line up on each side of the fullback.
b. the position played by such a back.
2. (in soccer, Rugby, field hockey, etc.) a player stationed near the forward line to carry out chiefly offensive duties.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.