English definition of “tub”
/tʌb/ noun [C]
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: a tub of ice cream/margarine
BATH US (UK bath) › a large container that you fill with water and sit in to wash