The right for a magazine
or other periodical publishing entity
to publish an author
in one of its volume
s. The author restrict
s the publisher to publish the work one time only
; and that the work may be published in North America
, only. If the publisher wants to reprint, or to publish the work internationally, the author must be paid again.
I presume that there are other terms that are used outside of the United States; but this one is pretty popular in the US.