肘节铁

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.