打扫

打扫 (dǎsǎo) means 'to clean' — specifically to clean a room, house, or other space by sweeping, dusting, mopping, and tidying. It is the standard word for housework cleaning. The character 打 here is a 'verb prefix' (it doesn't literally mean 'hit'), and 扫 means 'to sweep,' so 打扫 emphasizes the sweeping-and-tidying type of cleaning.

Two important distinctions for English speakers: first, 打扫 is for cleaning a SPACE — 打扫房间 (clean the room), 打扫教室 (clean the classroom). To wash an OBJECT (clothes, dishes, hands), use 洗 (xǐ), not 打扫. Second, 打扫卫生 (dǎsǎo wèishēng, literally 'clean hygiene') is a fixed phrase that simply means 'to do cleaning / clean the place up' — you'll hear it in homes, schools, and offices across China.