Shitagi (下着) means 'underwear' or 'underclothes.' These are garments worn directly against the skin, underneath your main clothes, for hygiene and comfort. For example, if you have a pile of laundry, you might say, '洗濯する下着がたくさんあります' (I have a lot of underwear to wash).

体に直接着る「肌着」や「下着」のことです。例：下着を洗います。