母国語, ぼこくご
language of one's country, mother tongue, native language
英語は私の母国語です。
の
Particle, See 乃, occasionally ん, orig. written 乃 or 之
1. indicates possessive
2. nominalizes verbs and adjectives
See が・1
3. substitutes for "ga" in subordinate phrases
often ん
4. (at sentence-end, falling tone) indicates a confident conclusion
Female term or language
5. (at sentence-end) indicates emotional emphasis