Note 319 — CANTO THE THIRD.
Reading edition
{261} [The name "Tigris" is derived from the Persian tîr (Sanscrit Tigra), "an arrow." If Byron ever consulted Hofmann's Lexicon Universale, he would have read, "Tigris, a velocitate dictus quasi sagitta;" but most probably he neither had nor sought an authority for his natural and beautiful simile.]