横よこ一いっ線せんMeaningsNo-adjective1. (running) abreast; side-by-side; in a row (oft. adverbially as 〜に)2. neck and neck; (almost) equalKanji used横sideways一one線lineComposed of横よこhorizontal (as opposed to vertical); side-to-side (as opposed to front-to-back); width; breadth; side (of a box, etc.); beside; aside; next to; unconnectedNoun一いっ線せんone line; (a) single line; boundary; line (between things); distinction; forefront; front lineNoun