Proto-IE: *dhrawǝs-
Meaning: to break, to crumble
Tokharian: B trus- 'lacerate, tear to pieces, mangle' (Adams 318)
Old Greek: thráu̯ō, aor. thrâu̯sai̯, p. ethráu̯sthēn , pf. téthrausmai̯, va. thraustó- `zerbrechen, zermalmen, entkräften'; thráu̯lo- `zerbrechlich'; thrâu̯ma, thrâu̯sma n. `Bruchstück, Zermalmung, Wunde', thrâu̯si-s f. `das Zerbrechen usw.', thraûron = traganón, thrauómenon Hsch.
Russ. meaning: разбивать(ся), крошить(ся)