Lewis & Short

incŭbĭto, āre, v. freq. [incubo], to lie in or upon any thing: cellae, in quibus incubitant, in which they brood, Col. 8, 14, 9. In Plin. 8, 43, 68, § 169, the best read. is in cubitu.
In mal. part.: jam incubitatus es, Plaut. Pers. 2, 4, 13.