Proto-IE: *tern-
Meaning: thorny bush, thorn
Old Indian: tŕ̥ṇa- n. `grass, herb, straw'
Old Greek: térnak-s <acc. térnaka> `cactus stalk' (Hsch.)
Celtic: [ Ir trāinīn ]
Russ. meaning: растение (колючий кустарник), колючка растения
References: WP II 641
piet-prnum,piet-meaning,piet-ind,piet-greek,piet-slav,piet-germ,piet-celt,piet-rusmean,piet-refer,