curb
/ˈkərb/
noun
an edging (as of concrete) built along a street to form part of a gutter
a market for trading in securities not listed on a stock exchange
a raised edge or margin to strengthen or confine
They sat on the curb eating their ice cream.
verb
to furnish with a curb
to check or control with or as if with a curb
to lead (a dog) to a suitable place (such as a gutter) for defecation
noun
the visual attractiveness of a house as seen from the street