Lewis Short
(adjective) : inconnīvus (better incōnīvus), a, um, 2. in-coniveo
* That does not close the eyes, sleepless (Appuleian; cf. inconivens): vigiliae,App. M. 6, p. 179, 5.
* Of the eyes, not closing: oculi,App. M. 2, p. 124, 19.
Charlton T. Lewis, Charles Short, A Latin Dictionary