LATIN DICTIONARYLexicon Latīnum
noun · masculinesecond declension

riscus

riscus m (genitive riscī)

Meaning

  1. masculinebox, chest, trunk
  2. Medieval Latinmasculinewindow
    Aliquando sine impluvio exstructum, aedificii molem constituit compressam, paucis columnis nixam, luminis admittentem modicum per riscos affabre clat[h]ratos.1712, Engelbert Kaempfer, Amoenitatēs Exoticae I.8.107

Declension

declension
formsingularplural
nominativeriscusriscī
genitiveriscīriscōrum
dativeriscōriscīs
accusativeriscumriscōs
ablativeriscōriscīs
vocativerisceriscī

riscus, i, m., = ῥίσκος,
I. a trunk, chest, Ter. Eun. 4, 6, 16; Dig. 34, 2, 26; Hier. in Ezech. 4, 15.

Origins

A borrowing, probably ultimately from Proto-Celtic *rūskos, in any case via Ancient Greek ῥίσκος (rhískos, “chest, trunk”). According to Beekes the change from the Celtic vowel is likely explained by the Ancient Greek word having been borrowed via Phrygian from Galatian.

Quick answers

What does riscus mean in Latin?
riscus, a noun, means “box, chest, trunk; window”.
What is the genitive of riscus?
The genitive singular is riscī. riscus is masculine, second declension.