颔首 hànshǒu to nod Origin Definitions Defs Strokes Stroke Words Sentences Sents 颔首之交 hànshǒuzhījiāo nodding acquaintance a person one knows only slightly; a nodding acquaintance颔首微笑 hànshǒuwēixiào to nod and smile to nod one's head and smile in greeting or as a sign of approval