A spoon in the tabernacle context was a small hollow vessel or censer used to hold incense. It was a sacred vessel associated with the offerings made when the tabernacle was set up.
Numbers 7 records that each tribal prince brought one golden spoon filled with incense. The summary states that the twelve princes presented twelve golden spoons filled with incense.
The vessels were made of gold and had a stated weight of ten shekels. The term can also represent a fork in another passage, showing that its translation depends on context.