Any of various alloys with tin as the main component; bright modern pewter contains 6-7% antimony and 1-2% copper; the dull metal of the past contained up to 25% copper, antimony, or lead. POISONOUS!Sometimes sculptures described as made of lead have actually been made of such an alloy as this. Caution: contact with lead can contaminate food with poison.(pr. PYOO-tər)