noun
second-year college student; sophomore
Refers specifically to a student in their second year of university or college. The term is common in Japanese academic contexts.
彼は大学の二回生です。
He is a second-year university student.
二回生になると専門科目が増える。
When you become a sophomore, specialized subjects increase.
Compound of 二 (に, 'two') + 回 (かい, counter for occurrences/years) + 生 (せい, 'student'). The 回 counter is used for year of study in university contexts.