Definiciones
1.NounThe rails that a tram runs on.
2.NounEither of the two pairs of sidelines marked on a tennis court which mark the outside of the singles and doubles playing areas.
3.NounA scratch on a film, usually vertical, that extends through multiple frames.
4.NounA mark or bruise having the shape of two parallel lines."a tramline scar"
5.NounA pair of vertical bars (||) placed to the left of the headword in certain editions of the OED to indicate that the term is "alien or not fully naturalized" (such as a recent borrowing).
6.VerbOf a vehicle: to tend to follow the contours of the ground with its wheels.