Proto-IE: *derw-, *drēw-
Meaning: tree; firewood; oak, pine (?)
Hittite: taru- n. 'Holz' (Friedrich 217)
Old Indian: dāru, gen. droḥ, drúṇaḥ, in. drúṇā, loc. dāruṇi `wood, timber'; dru- n., m. `wood or any wooden implement', m. `tree, branch'; dárvi-, dárvī- f. `(wooden) ladle'; drọ́na- n. `wooden vessel, trough, bucket'; druṇī- f. `watertrough'; druma- m. `tree'
Avestan: dāuru, gen. dravš 'Baumstamm, Holzstück, Waffe aus Holz, etwa Keule'
Old Greek: dórü, gen. hom. dọ̄rós, dọ̄́ratos, pl. dọ̄̂ra, du. dọ̄̂re, trag. gen. dorós, dat. dorí, dórei, att. gen. dóratos n. `Holz, Baumstamm, Speer'; {dórü 'Eiche' - not found!} kret. dorā́ = dokós 'Balken' EM || drǖ̂-s, drüós f. `Baum, bes. Eiche'; hom. pl. drümá n., drǖmá `Wald'; hom. déndreo-n, att., ion. déndro-n n. `Baum'; éndruon 'oaken peg or pin', Hs. 'heart-wood of trees' [éndroia Hsch. written for éndrua 'heart-wood of trees' LS 561)] || ?? drói̯tǟ f. `Badewanne, Wiege, Sarg'
Celtic: OIr derucc (gg), gen. dercon glans, Cymr derwen, pl. derw, bret. deruenn ds.; gall. ON Dervus Eichenwald, abrit. ON Derventio; MIr drochta `Fass Tonne'
Albanian: dru, art. druri m. 'timber, wood, log'; pl. drurë 'trees'
Russ. meaning: дерево, дрова; дуб/сосна