球場上：越過規則那條線的位置
把「另外那一側」用在球場上：線的另一邊就是規則不准你待的那一邊。
adjective · B2
In games such as soccer and hockey: standing in a place on the field, usually ahead of the ball, where the rules do not allow you to play it.
越位的
核心畫面
The word is built from off and side, and a useful way to hold it is: not this side — the other one, the one away from where you belong. Stand on the pavement beside a car and one side is close to you; the far side, facing the moving traffic, is the off side. Carry the same picture onto a pitch. The rules give each player a side of the line they may be on, and a player who has drifted past it is on the wrong side of it — off side. In both pictures nothing has happened yet. The word only tells you where something is.
這個字由 off 加 side 組成，可以想成：不是這一邊，是另外那一邊——離開你該在的位置的那一側。站在人行道上看…更多收起
這個字由 off 加 side 組成，可以想成：不是這一邊，是另外那一邊——離開你該在的位置的那一側。站在人行道上看一台車，靠近你的是近的那側；遠的、朝著車流的那一側，就是 off side。把同一個畫面搬到球場上：規則給每個球員一條線，線的這一邊才是他能待的地方，飄過去的人就站到了另一側。兩個畫面裡都還沒發生任何動作，這個字只告訴你東西在哪一邊。From the word’s history
From off plus side; compare German abseits, meaning out of the way or aside, and Dutch afzijdig.
來自 off 加 side。德文的 abseits（在一旁、離開路線）和荷蘭文的 afzijdig 都是同一種組合方式，都指「偏到旁邊去的那一側」。
Wiktionary entry for offside (kaikki:3f6f69a190036ae4:676781456:16981), supplied in the evidence packet
Two branches
車輛上：離人行道最遠的那一側
同樣是「另外那一側」，只是這次的參考點不是規則的線，而是路邊。
noun · C1
The offside: in British English, the side of a car that is closer to the middle of the road as you drive — the side furthest from the kerb, which is the right side in Britain.
（車子）靠馬路中間的那一側