noun
smoky fire to repel mosquitoes
A traditional method of driving away mosquitoes by burning materials that produce smoke, such as pine needles or special coils. Often used outdoors in summer.
See also: 蚊遣り
夏の夕方、庭で蚊遣り火を焚いた。
On a summer evening, we lit a smoky fire in the garden to keep mosquitoes away.
Compound of 蚊遣り (kayari, 'mosquito repellent') + 火 (hi, 'fire'). The reading かやりび is a straightforward combination.