mold, mould, cast -- (container into which liquid is poured to create a given shape when it hardens)
Overview of verb mould
The verb mould has 3 senses
model, mold, mould -- (form in clay, wax, etc; "model a head with clay")
cast, mold, mould -- (form by pouring (e.g., wax or hot metal) into a cast or mold; "cast a bronze sculpture")
shape, form, work, mold, mould, forge -- (make something, usually for a specific function; "She molded the rice balls carefully"; "Form cylinders from the dough"; "shape a figure"; "Work the metal into a sword")