Borrowed from Ancient Greek κᾰ́ννᾱ (kắnnā, “reed”), from Akkadian 𒂵𒉡𒌑𒌝 (qanûm, “reed”). Compare Biblical Hebrew קָנֶה (qané), Aramaic קַנְיָא (qanyā) or ܩܲܢܝܵܐ (qanyā) and Classical Syriac ܩܰܢܝܳܐ (qanyo).
Practice speaking and memorizing "canna" and many other words and sentences in Latin.