"bull," 1650s, from Spanish toro "bull," from Latin taurus (see steer (n.)).
Entries linking to toro
steer n.
"young ox," Old English steor "bullock," from Proto-Germanic *steuraz (source also of Old Saxon stior, Old Norse stjorr, Swedish tjur, Danish tyr, Middle Dutch, Dutch, German stier, Gothic stiur "bull"), perhaps from PIE *steu-ro-, denoting "larger domestic animal" (see Taurus). In U.S. of male beef cattle of any age.