1) Blockers 2) Blockers and tacklers 3) Centers and ends 4) Centers and tackles 5) Certain ends 6) Certain football players 7) Certain team players 8) Dolphin guards 9) Ends 10) Ends and centers 11) Grid guards 12) Gridiron guards 13) Gridiron guards and tackles 14) Guards and tackles 15) Inspectors of railroad cars 1) Ends 
• (pl. ) of Lineman
[n] - the football players who line up on the line of scrimmage
noun the football players who line up on the line of scrimmage