tap

each of them shakes her Fan at me with a smile , then gives her right-hand woman a tap upon the shoulder

Coordinate term: click

For to the first floor his duties never took him, at this period, nor to the second, once he had made his bed, and swept clean his little room, which he did every morning the first thing, before coming down, on an empty stomach. Whereas Erskine never did a tap on the ground floor, but all his duties were on the first floor.