Mold (current Br Eng 'mould'): Shape that something is put into while it cools and/or dries, so that it adopts that shape
Seal Metal object with an engraved image, often a ring, used to seal formal documents (and letters, once)
Potter's mark Emblem carved or stamped in clay before it dries.
Generally, you'll find dictionaries useful. If you have trouble understanding them, quote the problem text.
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