American Heritage® Dictionary of the English Language, Fourth
Edition - n. The side of a pavement or street that is bordered
by a curb. - n. A sidewalk. - adj. Located, operating, or
occurring at or along the sidewalk or curb: curbside trash
collection. GNU Webster's 1913 - n. the edge of a sidewalk that
borders a curb - n. the side of a sidewalk that is bordered by a
curb - curb + side (Wiktionary) “State law does require that
elections officials bring ballots to the cars of elderly and
disabled voters when they request the assistance, he writes,
allowing them to engage in "curbside" voting.” “Toronto's
recycling plan allows people to include paper-based takeout
coffee cups in curbside recycling because they can be
composted.” “Another was almost getting thrown up on by Janis
Joplin curbside of the Fillmore Auditorium.” “National
Transportation Safety Board found that so-called curbside bus
companies, which pick up riders on sidewalks rather than in
terminals, were involved in fatal accidents at seven times