cancellus

Meaning

one of the bars which, in the form of a grid, collectively constitute a door that lets daylight through; the bars were covered by vēla if it was desired to keep the light off – lattice, grate, grid, bars, barrier, railings

Pronounced as (IPA)

[kaŋˈkɛl.lʊs]

Etymology

Diminutive, from cancer (“crab”) + -lus.