Twofold, having a double purpose or nature.
Having two separate parts, often adjoined by a line (or sometimes a space), e.g. Wright-Phillips.
Used other than figuratively or idiomatically: see double, barrelled. Having two barrels, as a gun.
Forceful, powerful (like a double-barrelled shotgun).
Pluralistic.
Consisting of or containing more than one of something.
In systems of number, not singular or not singular or dual.
A person with some form of multiplicity, particularly dissociative identity disorder.
The plural number. In English, referring to more or less than one of something.
A word in the form in which it potentially refers to something other than one person or thing; and other than two things if the language has a dual form.