Rereading D.C. v. Heller, I was struck by the following passage (one paragraph break added):
The phrase "bear Arms" also had at the time of the founding an idiomatic meaning that was significantly different from its natural meaning: "to serve as a soldier, do military service, fight" or "to wage war." ....
[But] the meaning of "bear arms" that petitioners and Justice Stevens propose is not even the (sometimes) idiomatic meaning. Rather, they manufacture a hybrid definition, whereby "bear arms" connotes the actual carrying of arms (and therefore is not really an idiom) but only in the service of an organized militia. No dictionary has ever adopted that definition, and we have been apprised of no source that indicates that it carried that meaning at the time of the founding. But it is easy to see why petitioners and the dissent are driven to the hybrid definition. Giving "bear Arms" its idiomatic meaning would cause the protected right to consist of the right to be a soldier or to wage war--an absurdity that no commentator has ever endorsed.
Worse still, the phrase "keep and bear Arms" would be incoherent. The word "Arms" would have two different meanings at once: "weapons" (as the object of "keep") and (as the object of "bear") one-half of an idiom. It would be rather like saying "He filled and kicked the bucket" to mean "He filled the bucket and died." Grotesque.
That there's a zeugma you're talking about, Mr. Justice: "the use of a word to modify or govern two or more words when it is appropriate to only one of them or is appropriate to each but in a different way, as in to wage war and peace or On his fishing trip, he caught three trout and a cold." Why didn't you just say so?
I should note that the word "zeugma" appears in Westlaw's Allcases database 20 times -- all of them either in the name Zeugma Corp. or the title of Libert H. Boeynaems, Bishop of Zeugma (and, yes, there is likely a connection to the word, but rather remote).