plural of Co-Co

(rail transport) A wheel arrangement for diesel and electric locomotives signifying that a locomotive has six axles, each powered by a motor, on two bogies.

Abbreviation of Colorado. A state of the United States.

Abbreviation of county. / (military) Initialism of commanding officer. / (military) Initialism of commissioned officer. / (US, law enforcement) Initialism of corrections officer.

Abbreviation of company. / Abbreviation of county.

(colloquial) Clipping of company.

(nonstandard) they (singular). Gender-neutral subject pronoun, coordinate with gendered pronouns he and she.

Abbreviation of company, alternative form of Co. / Abbreviation of county, alternative form of Co.

carbon dioxide.

together; mutually; jointly / partner or subordinate in an activity / to the same degree / (mathematics) of the opposite, of the counterpart; dual