N.Y. CPL Law § 50.10

§ 50.10 Compulsion of evidence by offer of immunity; definitions of\n terms.\n The following definitions are applicable to this article:\n 1. "Immunity." A person who has been a witness in a legal\nproceeding, and who cannot, except as otherwise provided in this\nsubdivision, be convicted of any offense or subjected to any penalty or\nforfeiture for or on account of any transaction, matter or thing\nconcerning which he gave evidence therein, possesses "immunity" from any\nsuch conviction, penalty or forfeiture. A person who possesses such\nimmunity may nevertheless be convicted of perjury as a result of having\ngiven false testimony in such legal proceeding, and may be convicted of\nor adjudged in contempt as a result of having contumaciously refused to\ngive evidence therein.\n 2. "Legal proceeding" means a proceeding in or before any court or\ngrand jury, or before any body, agency or person authorized by law to\nconduct the same and to administer the oath or to cause it to be\nadministered.\n 3. "Give evidence" means to testify or produce physical evidence.\n