1
general::
Phrase(s): flare something out
to spread something out; to make something wider. (Said especially of one end of a tube or round-topped vessel.) • Can you flare the end of this pipe out a little? • Flare out the end of this pipe., Phrase(s): flare out
to spread out; to widen. (Said especially of one opening of a tube or round-topped vessel.) • The end of the pipe flared out to a larger diameter. • The top of the vase flared out, and was decorated with little blobs of colored glass.
McGrawhill's American Idioms And Phrasal Verbs