noun Download 🔗Share One of the two long pieces of wood, extending before a vehicle, between which a horse is hitched; a shaft. Examples : "The farmer carefully attached the horse to the wagon's thills. " vehicle part machine agriculture Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share The shallow stratum of underclay that lies under a seam of coal; the bottom of a coal-seam. Examples : "The miners carefully removed the coal, being mindful of the slippery thill underneath to avoid a cave-in. " geology material Chat with AIVocabulary GamePractice Reading