The egg is the largest cell in the human body and contains a high amount of water. When the egg is frozen, the ice crystals that form can destroy the integrity of the cell. To prevent this, the egg must be dehydrated prior to freezing.
A slot car (sometimes, slotcar) is a powered miniature auto or other vehicle that is guided by a groove or slot in the track on which it runs.
1. coin slot-a slot through which coins can be inserted into a slot machine. slot-a small slit (as for inserting a coin or depositing mail); he put a quarter in the slot. coin machine, slot machine-a machine that is operated by the insertion of a coin in a slot.