A catcaller is a person who loudly shouts, whistles, or makes sexually suggestive, threatening, or harassing remarks at someone, typically in public spaces like streets. This behavior, known as catcalling, is generally unwelcome and considered a form of street harassment. It often involves rude, derogatory comments or sounds, such as whistles or kisses, aimed at the targeted individual without their consent. Catcalling can limit people's access to public spaces and often has a serious negative impact on those who experience it. The term "catcaller" specifically refers to the person who engages in this behavior. In summary, a catcaller is someone who directs unwanted, often sexualized verbal or non-verbal harassment in public, commonly experienced as a loud whistle or shout.