producing two at a birth or in a clutch
• (a.) Producing only two eggs for a clutch, as certain birds do. • (a.) Having two kinds of young, as certain annelids.
Di'to·kous adjective [ Greek 
ditocous, ditokous 1. Producing two young at a birth.2. Producing young of two kinds; as, some worms.
producing two young or laying two eggs at a time. · producing two kinds of young, as certain worms.