curtsy
noun
[ ˈkəːtsi ]
• a woman's or girl's formal greeting made by bending the knees with one foot in front of the other.
• "she bobbed a curtsy to him"
curtsy
verb
• perform a curtsy.
• "his sisters had curtsied to the vicar"
Origin:
early 16th century: variant of courtesy. Both forms were used to denote the expression of respect or courtesy by a gesture, especially in phrases such as do courtesy, make courtesy, and from this arose the current use (late 16th century).