The phrase "young waitress" refers to a woman who is working as a server in a restaurant or café and is relatively early in her life or career. Full definition
The appearance of a beautiful young waitress in his life is a tempting distraction and a serious threat to everything he has. (sho.com)
He meets a new muse in young waitress Alma (remarkable newcomer Vicky Krieps), who proves to be a disruptive presence in his strict routine, much to his dismay. (artsbham.com)
Charlotte and Emma's father, Bucky (Alan Arkin), has fallen for his much younger waitress Ruby (Amanda Seyfried). (thehollywoodnews.com)