in138MEANING AND DEFINITION OF NI. The word ‘negotiable’ means transferable from one person to another, and the term ‘instrument’ means a document of title of money (as described by Prof. Goode).. A NI is required toAv. Vereador José Diniz 2270, CEP: 04604-003- Brooklin - São Paulo - SP - Brasil. Tel. +55 (11) 5090-5080 (11) 9 8437-9824