n. In ornithology: A large grallatorial bird of either of the genera Platalea and Aiaia: so called from the broad, flat, spatulate dilatation of the end of the bill, likened to a spoon. See cuts under Platalea and aiaia.n. The shoveler-duck, Spatula clypeata. See cut under shoveler.n. The scaupduck, Fuligula marila. See cut under scaup.n. The ruddy duck. Erismatura rubida; the broadbill: more fully called spoon-billed butterball. See cut under Erismatura.n. In ichthyology, the spoon-billed cat, or paddle-fish, Polyodon spatula. See cuts under paddle-fish.