IPA: //ˈwɔːʃdeɪ//
KK: /ˈwɔʃˌdeɪ/
A specific day designated for doing laundry or washing clothes.
Every Saturday is washday in our house, and we always have a pile of clothes to clean.
Washday → It is formed from "wash" (from Old English *wascan*, meaning to cleanse with water) and "day" (from Old English *dæg*, meaning a period of 24 hours). The word "washday" refers to a specific day designated for washing clothes or linens.
Think of a day specifically set aside for 'cleansing' ('wash') — that's what 'washday' means.