1.One who carries the line in surveying, etc.; the surveyor who marks positions with a range pole.
2.A man employed to examine the rails of a railroad to see if they are in good condition; also, a man employed to install or repair telegraph, telephone, television cable, or power lines. Also called linesman.
3.(Football) A player whose position is in the first (forward) line, as opposed to a back; one who plays on the line of scrimmage. specifically: A center, guard, or tackle.
4.A ladies' man who is especially adept at inventing effective introductory phrases (pick-up lines) to gain a woman's attention. (Colloq.)
5.The position of a player on a football team who is stationed on the line of scrimmage.
...
