To betray or go back on.
To cross twice in hybridization, as (A × B) × (C × D); for example, in commercial hybrid seed corn, A through D are classically inbreds, and their grandoffspring is the seed for sale.
To swindle, deceive, or trick.
To duplicate.
A duplicate of an order receipt printed for kitchen staff.
A duplicate of a photographic image.
A person who has been deceived.
A duplicate.
A counterfeit; a fake.