What does septicollis mean in Latin?

septicollis, a adjective, means “seven-hilled, standing on seven hills, a reference to Rome.”.

Where does septicollis come from?

Proto-Afroasiatic *sṗɣ? → Proto-Semitic *šabʕ-bor.? → Proto-Indo-European *septḿ̥ → Proto-Italic *septəm → Latin septicollis.

adjectivethird-declension two-termination adjective

septicollis (neuter septicolle)

two terminationseven-hilled, standing on seven hills, a reference to Rome.
Quibus transactis civitas septicollis diruetur.After which Rome will be destroyed.

singular
form	masculine	feminine	neuter
nominative	septicollis	septicollis	septicolle
genitive	septicollis	septicollis	septicollis
dative	septicollī	septicollī	septicollī
accusative	septicollem	septicollem	septicolle
ablative	septicollī	septicollī	septicollī
vocative	septicollis	septicollis	septicolle

plural
form	masculine	feminine	neuter
nominative	septicollēs	septicollēs	septicollia
genitive	septicollium	septicollium	septicollium
dative	septicollibus	septicollibus	septicollibus
accusative	septicollīs septicollēs	septicollīs septicollēs	septicollia
ablative	septicollibus	septicollibus	septicollibus
vocative	septicollēs	septicollēs	septicollia

septĭcollis, e, adj. septem-collis,

I. seven-hilled, standing on seven hills: arx, i. e. Rome, Prud. στεφ. 10, 412 (cf.: dis, quibus septem placuere colles, Hor. C. S. 7.

Proto-Indo-European *kʷel-der.? Latin collis Latin septicollis From septem + collis.