Proto-IE: *oks-
Meaning: ash-tree
Armenian: hachi `a k. of ash-tree'
Old Greek: oksǘǟ f. `Buche, Fagus silvatica; Speerschaft (aus Buche), Speer'
Albanian: ah, pl. -e `beech' (*oskā)
Russ. meaning: дерево (ясень)
References: WP I 184 f
Comments: Very probably same as *ōs-.
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