lady-in-waiting UK /ˌleɪdɪ ɪn ˈweɪtɪŋ/US /ˌleɪdi ɪn ˈweɪtɪŋ/ noun1 •A lady, often a noblewoman, in the household of a queen, princess, or other woman of higher rank who attends her as a personal assistant, generally a role considered an honour. formsladies in waiting · ladies-in-waiting