地膽
simp地胆dei6 daam2dì dǎn
English
- one who is extremely familiar with the surroundings; a local
- person who knows a place very well
粵語 — Cantonese
- 對一個地方瞭如指掌嘅人（量詞：個）
Examples
佢係呢區嘅地膽，住咗喺度五十年喇。
He has been living here for 50 years. He knows this place well.
Sources: cc-canto, rime-cantonese, words.hk