A sliver spoon in her mouth.
C.Z. didn’t take too much seriously. She never had; she’d been born with a silver spoon in her mouth, but had removed it at her first gurgle and flung it across the nursery. But when she’d read In Cold Blood almost ten years earlier, she, like all of Truman’s swans, had been stunned into an uncomfortable bashfulness around him. Suddenly their gay, gossipy little friend, arm candy, pocket change, was another creature entirely. A giant, a literary sentinel. She wondered how she’d ever imagined that they looked at the world in the same way, thought the same thoughts, shared the same vices and delights and interests.
Gurgle: to make a sound like a liquid boiling or bubbling.
Nursery: In a house for the special use of a young children.
[but had removed it at her first gurgle and flung it across the nursery.]___But I've no idea what it means.