capital [ˈkæpɪtl] adjective 1. [letter] mayúscula 2. [punishable by death] capital capital [ˈkæpɪtl] noun 1. [of country, main centre] capital f 2. capital (letter) mayúscula f in capitals en mayúsculas 3. [money] capital m to make capital (out) of (fig) sacar partido de