四し足そく動どう物ぶつしそくどうぶつMeanings1nountetrapodBiological term for four-limbed vertebrates, including amphibians, reptiles, birds, and mammals. In everyday language, it may be understood as 'four-legged animal', but the scientific sense is broader.四し足そく動どう物ぶつには、カエルや鳥とり、人にん間