noun🔗SharePlatytcephalus属鱼, 鲬鱼。 Any fish in the Platycephalidae family."The marine biologist showed us pictures of various fish families, including the odd-looking flatheads with their flattened heads. "这位海洋生物学家给我们展示了各种鱼类的照片，包括长相奇特的鲬鱼，它们的头部都是扁平的。fishanimalChat with AIVocabulary GamePractice Reading
noun🔗Share沉头螺钉 (plural only "flatheads") A type of screw or bolt designed to fit in a countersink so that it sits flush with a surface."The carpenter used flatheads to attach the countertop so the screws wouldn't stick out. "木匠用沉头螺钉来固定台面，这样螺丝就不会突出来了。technicalitemmachinepartChat with AIVocabulary GamePractice Reading
noun🔗Share平头发动机 (plural only "flatheads") A type of engine that has the valves placed in the engine block beside the piston, instead of in the cylinder head, as in an overhead valve engine."The old tractor used flatheads, making it a bit slower than newer models. "老式拖拉机用的是平头发动机，这使得它比新型号的拖拉机稍微慢一些。technicalmachinevehicletechnologypartChat with AIVocabulary GamePractice Reading
noun🔗Share鲶鱼，扁头鲶 A large freshwater catfish native to North America, Pylodictis olivaris."My uncle loves fishing for flatheads in the river because they can grow to be very big. "我叔叔喜欢在河里钓扁头鲶，因为这种鱼能长得很大。fishanimalChat with AIVocabulary GamePractice Reading
