Serpens

[sur-puh nz, -penz] /ˈsɜr pənz, -pɛnz/
noun, genitive Serpentis
[ser-pen-tis] /sərˈpɛn tɪs/ (Show IPA).
Astronomy
1.
the Serpent, a constellation consisting of two separate parts, the head (Serpens Caput) and the tail (Serpens Cauda) with Ophiuchus in between.
Origin
< Latin serpēns serpent, orig. present participle of serpere to creep, crawl; cognate with Greek hérpēs (cf. herpes, herpetology)
British Dictionary definitions for Serpens

Serpens

/ˈsɜːpənz/
noun (Latin genitive) Serpentis (səˈpɛntɪs)
1.
a faint extensive constellation situated in the N and S equatorial regions and divided into two parts, Serpens Caput (the head) lying between Ophiuchus and Boötes and Serpens Cauda (the tail) between Ophiuchus and Aquila
Word Origin
Latin: serpent