Ribbed means marked with raised parallel bands. A ribbed jumper, ribbed vaulting, ribbed cuffs.
The ribs do work rather than decoration: in knitting they let the fabric stretch and spring back, which is why cuffs and collars are ribbed. In Gothic building, ribbed vaulting carries the load along the ribs so the panels between can be thin. Note rib beneath it.
1adjectiveribbedMarked with raised parallel bands.
“He wore a thick ribbed jumper to keep out the cold.”
ribbed is a quality of surface.
Proto-Indo-European
*h₁rebʰ- — arch, ceiling, cover
Proto-Germanic
*ribją — rib, reef
Proto-West Germanic
*ribi
Old English
ribb — rib
Middle English
rib
English
rib
English, today
ribbed
rib comes from Middle English rib, ribbe, from Old English ribb (“rib”), from Proto-West Germanic ribi, from Proto-Germanic ribją (“rib, reef”), from Proto-Indo-European h₁rebʰ- (“arch, ceiling, cover”). Cognate with Dutch rib (“rib”), Norwegian ribbe (“sparerib”), Norwegian ribben (“rib”), Low German ribbe (“rib”), German Rippe (“rib”), Old Norse rif (“rib, reef”), Serbo-Croatian rèbro (“rib”). wife or woman In reference to the creation of Eve from Adam's rib in the Bible.
Etymology from Wiktionary, CC BY-SA