One's preferred area of knowledge or expertise; a subject one is very skilled in, knows much about, or enjoys greatly. I worked in IT for a few years—it paid well, but it wasn't really my line of country.I won't comment, as speculating on political motivations is not my line of country.See also: country, line, of
line of country
a subject about which a person is skilled or knowledgeable. BritishSee also: country, line, of