Here for a moment, running my eye along the Piazza, which had its usual fringe of flower girls and mumpers, swearing porters and hackney coaches, I thought my man with the white handkerchief had not come; but shifting my gaze to the Little Piazza, which was darker and less frequented, I presently espied him walking to and fro under cover, with a cane in his hand and the air of a gentleman who had supped and was looking out for a pretty girl.
Source: wiktionary