Lewis & Short

mellĭcŭlus, a, um, adj. dim. [id.], honey-sweet, honeyed: corpusculum melliculum! a coaxing epithet, Plaut. Cas. 4, 4, 23.
Subst.: mellĭcŭlum, i, n., honey-pet, honey-kin. Plaut. Cas. 4, 4, 14.
Collat. form melculum, q. v.