Douglas Harper's Etymology Dictionary
Usage examples of "wash-tub".
The damp garment was dipped again, in another wash-tub that was filled with a mixture of vinegar and water - that reduced fading and enhanced the gloss of the silk - then rolled up in toweling again.
If you’ll just take one or two of the most necessary sort – I won’t venture to describe them to a lady like you, but you’ll recognise them at a glance – and put them through the wash-tub as we go along, why, it’ll be a pleasure to you, as you rightly say, and a real help to me.