noun

molds

moulds

There are black molds on the bathroom wall.

There are black moulds on the bathroom wall.

The factory uses molds to shape the plastic.

The factory uses moulds to shape the plastic.

((a type of)) mold a particular kind of mold This is a dangerous type of mold.

((a mold)) ((for sth.)) a container for shaping sth. She used a mold for the cake.

Synonyms (fungus): mildew, fungus; Synonyms (container): cast, form, pattern

From Old English 'molde' (earth). The fungus sense is from its soil-like appearance. The container sense may be from French 'moule'.

Think of something 'old' that gets 'mold'. For the container, picture a Jell-O 'mold'.

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