n. 线务员, 线路工人, 护路工, 养路工

Lineman \Line"man\ (l[imac]n"m[a^]n), n.; pl. {Linemen}
(l[imac]n"m[e^]n).
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.
[PJC]

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. [WordNet sense 4]
[WordNet 1.5]

linemen \linemen\ n. pl. {lineman}.
the football players who line up on the line of scrimmage. WN
hypen is odd for this def.
[WordNet 1.5]