pidgin

noun2

1. •
   An amalgamation of two disparate languages, used by two populations having no common language as a lingua franca to communicate with each other, lacking formalized grammar and having a small, utilitarian vocabulary and no native speakers. The speech is slow and supported by mime and gesture.

   • ‘I didnʼt know you can speak pidgin,’ he said and laughed. — 2019
2. •
   (no longer used) A person's business, occupation, work, or trade (also spelt as pigeon).

   • Forget money. That's my pidgin. — 1950