noun
samue; monk's working clothes
Traditional Japanese work clothing originally worn by Zen monks for manual labor; now also popular as casual or loungewear.
彼は庭仕事をするとき、いつも作務衣を着ている。
He always wears samue when doing garden work.
この作務衣は綿でできていて、とても着心地がいい。
These samue are made of cotton and are very comfortable to wear.
From 作務 (samu, 'temple work') + 衣 (e, 'clothing'). The reading さむい is an older or alternative pronunciation.