noun
Loanword from English; used in Japanese to describe someone who drinks alcohol heavily and regularly.
彼は若い頃からヘビードリンカーだった。
He has been a heavy drinker since he was young.
ヘビードリンカーは健康を害しやすい。
Heavy drinkers are prone to health problems.
Variant with interpunct; less common but still seen.
Loanword from English 'heavy drinker'.