lay witness

A witness who does not testify as an expert and who is therefore restricted to giving an opinion or making an inference that (1) is based on firsthand knowledge, and (2) is helpful in clarifying the testimony or in determining facts. Fed. R. Evid. 701. [Cases: Evidence 470–503. C.J.S. Evidence §§ 509–523, 527–596, 610–612, 619, […]