The phrase "big tub" refers to a large container or bathtub.
Sentences with «big tub»
Bigger tubs designed for use in the big bathtub will generally last longer as there's more room for baby to grow. (wetheparents.org)
A tech free week sounds great — though I think I would give the hummus break a miss — we have started to buy it in bigger tubs as we go through it so much. (rockmyvegansocks.com)
I want a new, bigger tub with a surround so I don't have to scrub tile and grout all the time (I have 1 teenage girl and 3 young boys, so it gets used HARD!) (theinspiredroom.net)