peashooter
noun [ C ] uk/ˈpiːˌʃuː.tər/ us/ˈpiːˌʃuː.t̬ɚ/
玩具枪;（尤指）射豆枪
a long, thin tube through which small objects, especially dried peas, can be blown in order to hit something
US没什么杀伤力的武器;（尤指）小手枪
a small weapon, especially a gun, that is not very effective