From Japanese-English FreeDict Dictionary ver. 0.1:
[ichi1] [news1] [nf04] 線 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, [ichi1] [news1] [nf04] せん /sˈe̞ɴ/
1. (noun (common) (futsuumeishi))
(noun, used as a suffix)
line, stripe, stria
2. line (e.g. telephone line), wire
3. Ｘ線ray (e.g. X-ray), beam
4. line (e.g. of a railroad), track, route, lane
5. outline, contours, form
6. level
7. division
8. いい線line (of action), position, approach, policy, principle
9. 線が太い, 線が細いimpression one leaves, air one gives off