Meaning of “urn” - Learner’s Dictionary

urn

noun [ C ] uk us /ɜːn/
PLANTS

a round container that is used for plants or to store someone's ashes (= the powder that is left after a dead body has been burned)

DRINKS

a metal container that is used to make a large amount of coffee or tea and to keep it hot

(Definition of “urn” from the Cambridge Learner’s Dictionary © Cambridge University Press)