n A person who serves as a subject for artwork or fashion, usually in the medium of photography but also for painting or drawing.
n A simplify | simplified representation used to explain the workings of a real world system or event.
n (logic) An interpretation which makes a certain sentence true, in which case that interpretation is called a model of that sentence.
v (transitive) To display for others to see, especially in regard to wearing clothing while performing the role of a fashion model.