cool (subs.) Copy link • cool (subs.): frīgus: v. coolness. Phr.: In the c. of the morning, etc.: expr. with frigidus: thus Virg. has, carpamus frigida rura, G. 3, 325 or with verb, *quum calores diurni refrixerint, ubi minus aestuavit: v. foll. art.