The Collaborative International Dictionary
Opuscule
Opuscle \O*pus"cle\ ([-o]*p[u^]s"'l), Opuscule \O*pus"cule\ ([-o]*p[u^]s"k[-u]l), n. [L. opusculum, dim. of opus work: cf. F. opuscule.] A small or petty work.
Wiktionary
opuscule
n. A small or petty work.
Usage examples of "opuscule".
And, on the other hand, Caspar complained, that same opuscule “was brevissimamente scripto, con nullo schemate visualiter patefacto, nulle tabule nee rotule, und nulla specialis instructione.