operated by two people.

plural of double decker

A style of shirt cuff that is folded back on itself and then fastened with a cuff link. Usually considered more formal than a buttoned cuff.

plural of double cuff

plural of double feast

(Christianity) Any of certain feast days ranked above simples and semidoubles.

concavoconcave

Applying power in two directions. / Producing a double result.

simple past tense and past participle of double-quick

present participle of double-quick