= mammal with a fur skin, and slender elongated forelegs and fingers that support a flap of skin joining its fingers to its toes, which functions as a wing and allows it to fly; they fly around at night and hang upside down from trees or overhanging rocks during the day; also found in caves, tombs, unoccupied houses, and old ruins; classified as a bird by ancient Israelites because of its ability to fly; unclean; associated with death, desolation, destruction, and witchcraft