1 adjective ZOOL active at nightoíche gs as adj c m uthe owl is nocturnalis éan oíche é an t-ulchabhánnocturnal animalsainmhithe oíche2 adjective happening at nighta nocturnal walksiúlóid oíche3 adjective staying up at nighthe's a nocturnal creaturebíonn sé ina shuí i rith na hoíche