A conjunction meaning 'not limited to' or 'not just ...' Used as '〜に限らず' to indicate something applies beyond the stated example (similar to 'not only ... but also').
このサービスは大学生に限らず社会人も利用できます。
This service is available not only to university students but also to working people.
環境問題は都市部に限らず地方にも深刻な影響を与えている。
Environmental problems affect not only urban areas but also rural regions.
日本語に限らず他の言語の文法も同時に学んでいる。
I'm studying not only Japanese but also the grammar of other languages.
その問題は若者に限らず年配者にも当てはまる。
That issue applies not only to young people but also to older adults.