The device at the intersection of two railroad tracks to permit the wheels and flanges on one track to cross or branch for the other is called a frog.
Mid-men, the male versions of mid-wives, are called accouchers.
The distance that a place holder falls from a glass when it is lifted (you know, place holders sometimes get stuck to the bottom of a cold glass when you lift the glass) is called a bevemeter, a sniglet coined by comedian Rich Hall (who also coined “sniglet”).
