| Basque | artsu | bramble (cf. hartzi, ci-dessus) |
| Basque | art- | root in the names of various pointed implements and tools |
| Cymric | art | bear (bristled animal); Zend arša id. |
| Ossetish | ars | id. |
| Arm. | ardz | id. |
| Alb. | ari, arushkë | id. |
| Pers. | aris | juniper |
| Franç.: Poit. | arriches | résidus du teillage du chanvre |
| Ital.: TI | ariš | hedgehog, chestnut bur |
| Cat.: Rouss. | arse | bramble, hawthorn |
| Russian | arsa | juniper |
| Lith. | àrasas | (secondary) Fieldfare, 341 (Germ. wacholderdrossel) |
| Gallego | arisco | (secondaire) id. |
| Gallego: Ulla | arxa | pine needle (cf. brozað4.6.3.) |
| Franç.rég. | archon | hedgehog |
| Span. | arroz | rice (cf. risata hereunder) |
| Arm. | aros | Grey Heron, 118 |
| Ital.: Bresc. | éròis | Red-breasted Merganser, 60, cf. geronð4.6.1.1., harleð4.6.1.4. |
| Sbc. | oraš | Red-breasted Merganser, 60, 61 |
| R.Rom.: Sent | arzükla | barberry |
| Lettish | erkškis | thorn |
| Lith. | erškelys, eršketymas | barberry, rose bush |
| Lith. | eršketnys | narwhal |
| Germ.reg. | erztaucher | Great Crested Grebe, 66 |
| Germ. | Erzgebirge | an oronym (so called from its aspect, not from the ore, erz ci-après); cf. also Harzð4.6.1. |
| Germ. | erz | ore (from its aspect) |
| Ital. | orzo | barley (long glumes) |
| Franç. | orge | id. |
| Franç.: Hérens (VS) | Ordzes, Orchèra | alpages hérissés de rochers |
| Franç. | Mont d'Orzeires | sommité hérissée de sapins |
| Franç.: Sion (VS) | Montorge | (patois Montordze) une colline rocheuse pointue. L'étymologie "mont d'orge" est fausse; on n'y a probablement jamais cultivé de l'orge, le sol ne s'y prêtant pas |
| Franç.: Sav. | orcëra | bearberry |
| Franç.: Sav. | arzëlje | heath |
| Ital.:V.Verzasca(TI) | arzèla | chestnut |
| Ital. | orzaiuolo | stye |
| Ital. | orso | bear |
| Franç. | ours | bear |
| Franç.: Malmédy | ourson | hedgehog |
| Gallego | urce | heath |
| Franç. | raisin d'ours | bearberry |
| Franç.: Fully (VS) | orchèta | bearberry |
| Franç.: Aoste | orsate | id. |
| Franç.: Aoste | orsin | Ephedra |
| Franç. | oursin | urchin |