- bathtub, bathing tub, bath, tub - a relatively large open container that you fill with water and use to wash the body
--1 is a kind of vessel
--1 is a part of bathroom, bath
--1 has particulars: footbath; hot tub; Jacuzzi; sitz bath, hip bath - tub, vat - a large open vessel for holding or storing liquids
--2 is a kind of vessel
--2 has particulars: washtub - tub, tubful - the amount that a tub will hold; "a tub of water"
--3 is a kind of containerful