He released her, and she gave another curtsy then took a few steps back.
Ann Veronica, who knew her dress became her, dropped a curtsy to her father's regard.
As soon as the Dark One's gaze fell to her, she dropped into a deep curtsy.
When at last, smartly whirling his partner round in front of her chair, he drew up with a click of his spurs and bowed to her, Natasha did not even make him a curtsy.
For men this is a neck bow (from the head only) whilst women do a small curtsy.