verb (used without object)
Chiefly British. to entertain by dancing, singing, or reciting on the street or in a public place.
Canadian. to make a showy or noisy appeal.
Origin: Related forms
1850–55; perhaps, if earlier sense was “to make a living by entertaining,” < Polari < Italian buscare to procure, get, gain < Spanish buscar to look for, seek (of disputed orig.)