line of country

(one's) line of country

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
Farlex Dictionary of Idioms.

line of country

a subject about which a person is skilled or knowledgeable. British
See also: country, line, of
Farlex Partner Idioms Dictionary
See also:
  • (one's) line of country
  • make good as
  • make good as (something)
  • Those who can, do. Those who can't, teach.
  • Those who can, do; those who can't, teach
  • be (one's) strong point
  • be your strong point/suit
  • be (someone's) strong suit
  • long suit
  • long suit, one's