Modifies a noun

• check-in: Curbside Check-In - United has reinstated curbside check-in at 70 airports.

• parking: Caroline addressed the issue of curbside parking which leads to the pavement being unusable.

• recycling: We are lucky our council offer curbside recycling - how hard can it be?

• service: Nevertheless, they had curbside service for baggage check-in which his mother utilized.