noun.
A tub for bathing, especially one installed in a bathroom.
The Century Dictionary and Cyclopedia
noun.
A tub to bathe in: in the usual form, approximately of the length of the body, and often permanently fixed in a bath-room. Also called bathing-tub.
the GNU version of the Collaborative International Dictionary of English
noun.
A relatively large tub used to take a bath, usually a permanent fixture in a bathroom; it is an open container that is filled with water, in which a person immerses himself for the purpose of washing the body.