a brand name for a pocket-size, fixed-focus, snapshot camera.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for instamatic
The Instamatic flashes etched cruel skeletal shadows on his sagging face.The Strange and Mysterious Death of Mrs. Jerry Lee Lewis|Richard Ben Cramer|January 11, 2014|DAILY BEAST
Online Etymology Dictionary, © 2010 Douglas Harper