noun
: a median triangular bone lying at the junction of the parietal and occipital bones and rarely present in man but conspicuous in various lower mammals — see inca bone
noun
: a median triangular bone lying at the junction of the parietal and occipital bones and rarely present in man but conspicuous in various lower mammals — see inca bone
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012