(US) (usually) a paved footpath located at the side of a road, for the use of pedestrians / (US, by extension) any paved footpath, even if not located at the side of a road

plural of sidewalk

(construction) A passer-by or other person who watches and possibly advises work at a construction project from a sidewalk or other vantage point.

(US) An outdoor portion of a restaurant, coffeehouse or cafe.

plural of sidewalk superintendent

(US) A moving walkway.

(US) A colored chalk-like substance, made from paint, plaster of Paris, etc., used for drawing on sidewalks or cement.

plural of moving sidewalk

plural of sidewalk cafe

plural of sidewalk chalk