Meaning of “tub” - Learner’s Dictionary

tub

noun [ C ] uk us /tʌb/
LARGE CONTAINER

a large, round container with a flat base and an open top:

Outside was a stone patio with tubs of flowering plants.
FOOD CONTAINER

a small, plastic container with a lid, used for storing food:

BATH US (UK bath)

a large container that you fill with water and sit in to wash

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