Roz /roz/ [1 syll.] as a girls' name is of Old German and Latin derivation, and the meaning of the name Roz is gentle horse; horse protector; rose. Roz is a version of Rosalind (Old German).Roz is also a variation of Rosamond (Old German): also (Latin) pure rose.oz is a rare first name for females but a somewhat popular last name for all people (#102691 out of 150436, Top 68%).