(noun) a soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal; occurs in argentite and in free form ; used in coins and jewelry and tableware and photography
(noun) an edible tuber native to South America; a staple food of Ireland
(noun) annual native to South America having underground stolons bearing edible starchy tubers; widely cultivated as a garden vegetable; vines are poisonous