CO noun 9verb 1 noun9 •Abbreviation of county. •Abbreviation of Colorado: a state of the United States. •Initialism of commanding officer. •Initialism of conscientious objector. •Initialism of commissioned officer. •(US) Initialism of corrections officer or initialism of correctional officer. •Abbreviation of cutoff. •Initialism of clothing optional. •Initialism of common-offset method. verb1 •Abbreviation of cast on.
