Lewis Short
dūrĭuscŭlus, a, um
* Adj. dim. [durus, II. A.], somewhat hard, rough, or harsh (perh. only in the foll. passages).—Of expression: Catullus, Plin. H. N. praef. § 2; cf. versus,Plin. Ep. 1, 16, 5.
Charlton T. Lewis, Charles Short, A Latin Dictionary