noc·tur·nal 
(nŏk-tûrnəl)
(nŏk-tûrnəl)adj.
1. Of, relating to, or occurring in the night: nocturnal stillness.
2. Botany Opening at night. Used of flowers.
3. Zoology Most active at night: nocturnal lizards.
[Middle English, from Old French, from Late Latin nocturnālis, from Latin nocturnus, from nox, noct-, night; see nekw-t- in the Appendix of Indo-European roots.]
noc·turnal·ly adv.
- have one's heart in the right place
- have one's nose to the grindstone
- have one's wits about
- have one's wits about one
- have (or keep)(one's) wits about (one)
- have (or keep) (one's) wits about (one)
- have pity on
- haversack
- haversian canal
- haversian system
- have (someone) by the balls
- have someone by the balls
- have someone's number
- have (something) coming
- have something coming
- have/speak with a forked tongue
- have stardust in eyes
- have stardust in (one's) eyes
- have stardust in one's eyes
- have stars in eyes
- have stars in (one's) eyes
- have stars in one's eyes
- have/take a whack at
- have/take pity on
- have/take the bit in one's teeth