"path for pedestrians on the side of a street," 1739, from side (adj.) + walk (n.). The use of sidewalk for pavement as one of the characteristic differences between American and British English has been noted since at least 1902.
权威例句
1. Pieces of paper were skittering along the sidewalk.
人行道上飞舞着一张张纸片。
2. dog poop on the sidewalk
便道上的狗屎
3. He avoided stepping on the crack in the sidewalk.
他避免踩到人行道的裂缝上.
4. The children squared off the sidewalk to play hopscotch.