a small hut, on wheels so that it could be pulled to the sea, used in the 18th and 19th centuries for bathers to change their clothes
Collins Concise English Dictionary © HarperCollins Publishers::
bath•ing-ma•chine
(bā′ᵺing mə shēn′),USA pronunciation n.
- a small bathhouse on wheels formerly used as a dressing room and in which bathers could also be transported from the beach to the water.
- 1765–75
'bathing machine' also found in these entries (note: many are not synonyms or translations):