noun
tent-shaped mosquito net
A mosquito net shaped like a small tent, often used to protect infants or small children from insects.
赤ちゃんを蚊から守るために幌蚊帳を使った。
I used a tent-shaped mosquito net to protect the baby from mosquitoes.
蚊帳 is a general mosquito net, while 幌蚊帳 specifically refers to a tent-shaped one, often for infants.
Compound of 幌 (ほろ, 'canopy' or 'tent') and 蚊帳 (かや, 'mosquito net'). The spelling 母衣 is an older variant for 幌.