noun
sanitary shorts; period panties
Underwear designed for menstruation, often with a built-in absorbent layer or waterproof lining. The term is a wasei-eigo compound from 'sanitary' and 'shorts'.
最近はサニタリーショーツもおしゃれなデザインが増えている。
Lately, even sanitary shorts are coming in more stylish designs.
旅行のときはサニタリーショーツを何枚か持っていく。
When traveling, I take several pairs of period panties.