Lewis Short
frīguscŭlum (noun N) : dim.frigus
* Slight cold (post-class.).
* Lit., Tert. de Anim. 25.
* Trop., coolness, variance, disagreement between man and wife: quid si divortium non intercesserit, sed frigusculum? profecto valebit donatio, si frigusculum quievit,Dig. 24, 1, 32, § 12 (al. fribusculum).
Charlton T. Lewis, Charles Short, A Latin Dictionary