noun
A student who transfers into a school from another school, typically mid-year or at the start of a term.
今日、クラスに転入生が来た。
A transfer student came to our class today.
彼は転入生としてこの学校に慣れるのに時間がかかった。
As a transfer student, it took him time to get used to this school.
Compound of 転入 (てんにゅう, 'transfer into') + 生 (せい, 'student').