1) Agricultural outfit 2) Boilersuits 3) Duds for a farmer 4) Farm fashion 5) Farming attire 6) Field dressing 7) Garb for dirty work 8) Garb for Mario or Luigi 9) Garment worn without a belt 10) Some have bibs 11) Work clothes of a sort 12) Workwear Found on https://www.crosswordclues.com/clue/overalls
O'ver·alls noun plural 1. A kind of loose trousers worn over others to protect them from soiling. 2. Waterproof leggings. R. D. Blackmore. Found on http://www.encyclo.co.uk/webster/O/49