'Toggle iron' definitions:

Definition of 'Toggle iron'

From: GCIDE

Toggle \Tog"gle\, v. t. (Computer programming) To change the value of (a program variable) by activating a toggle switch; as, to toggle the view from character to graphic mode; to toggle the keyboard input from insert to overtype mode. [PJC]
Toggle iron, a harpoon with a pivoted crosspiece in a mortise near the point to prevent it from being drawn out when a whale, shark, or other animal, is harpooned.
Toggle joint, an elbow or knee joint, consisting of two bars so connected that they may be brought quite or nearly into a straight line, and made to produce great endwise pressure, when any force is applied to bring them into this position.