noun
long-sleeved shirt
A shirt with long sleeves, as opposed to a short-sleeved shirt (半袖シャツ).
今日は涼しいので長袖シャツを着てきた。
It's cool today, so I wore a long-sleeved shirt.
半袖シャツ is a short-sleeved shirt, contrasting directly with 長袖シャツ.
Compound of 長袖 (long sleeve) and シャツ (shirt, from English).