Wiktionary
ice tray
n. A household item usually in the form of a plastic or metal device with a series of indentations such that the item may be easily filled with water (or another liquid) for the purpose of being placed in a freezer, from which it will later be removed, at which point it will contain easily separable ice cubes (or frozen cubes of whatever liquid was placed in it).
Usage examples of "ice tray".
On the floor was an empty ice tray, over Penderecki's head a plastic bag.
Jack heard what he thought was the refrigerator being opened, then an ice tray being dumped.
She brought an ice tray from the refrigerator and cracked it open.
I put the contents of the ice tray into the champagne bucket and put the bottle into it with water.