modelling (Noun) — A preliminary sculpture in wax or clay from which a finished work can be copied.
modelling (Noun) — The act of representing something (usually on a smaller scale).
modelling (Noun) — Sculpture produced by moulding.
modelling (Verb) — Plan or create according to a model or models.
modelling (Verb) — (art) form in clay, wax, etc. ex. "model a head with clay"
modelling (Verb) — (art) assume a posture as for artistic purposes.
modelling (Verb) — Display (clothes) as a mannequin. ex. "model the latest fashion"
modelling (Verb) — Create a representation or model of.
modelling (Verb) — Construct a model of. ex. "model an aeroplane"