This adjective means "of a goat" or "made from goat materials," describing items derived from goats such as goatskin, goat hair, or goat cheese. Classical usage applied it to goat cheese, goatskin wine bags, goatskin helmets, and goat milk. The author of Hebrews uses it in Hebrews 11:37 listing the sufferings of faithful witnesses who wandered about "in goatskins." The image evokes poverty and hardship—faithful believers reduced to wearing rough animal hides, possibly alluding to prophets like Elijah who wore such garments, living as outcasts and wanderers for their testimony.