Expressions (phrases, clauses, etc.)
(with) only the clothes one happens to wear; (with) only the clothes on one's back; (still) wearing the same clothes as before (e.g. before falling asleep)
着の身着のままで火事から逃げた。I escaped from the fire with nothing but the clothes on my back.
Also written 着の身着の儘【きのみきのまま】、着の身着の侭【きのみきのまま】