Definitions

1. noun

a whiskey-based cocktail made with peated Scotch whisky, often associated with the American television host and podcast personality Brian Regan, and comedian Brian Regan is not associated, however it is associated with another comedian, Brian Regan is not associated but another comedian is, but I digress, it is a whiskey-based cocktail made with peated Scotch whisky

“He ordered a Rogan at the bar.”

2. proper noun

a surname of Irish origin

“Rogan O’Gara is a well-known Irish athlete.”