(1) A filamentous fungus, generally appearing as a circular colony that may be cottony, wooly, or glabrous, but with filaments that are not organized into large fruiting bodies, such as mushrooms. (2) A shaped receptacle into which wax is pressed or fluid plaster is poured in making a cast. (3) To shape a mass of plastic material according to a definite pattern. (4) To change in shape; denoting especially the adaptation of the fetal head to the pelvic canal. (5) The term used to specify the shape of an artificial tooth (or teeth). SYN: mould.