obsolete form of colonel.
Online Etymology Dictionary, © 2010 Douglas Harper
Examples from the Web for coronel
The Kent entered Coronel on March 13, coaled, and departed the same night.
The island of Santa Maria, off Coronel, lay in the distance.
The coronel's face was thoughtful as he took back the violin.
"Certamente, if you can use the arm," the coronel acquiesced.
The coronel plunged at once into the business for which they had been summoned.