I. ˈ ̷ ̷ˌ ̷ ̷ noun
1. : a secondary line : sideline
2.
a. : a line at the head of a newspaper or magazine article giving the writer's name
b. : something resembling such a by-line
his calm “This is London” was one of the war's most famous by-lines — Newsweek
II. transitive verb
: to write under a by-line
has by-lined numerous magazine pieces — Publishers' Weekly