tur·tle·neck
noun/ˈtɜːtlnek/
/ˈtɜːrtlnek/
enlarge image(also turtleneck sweater)a sweater with a high part fitting closely around the neck高领套头衫 - (North American English) (British English polo neck)a high, round collar made when the neck of a piece of clothing is folded over; a piece of clothing with a turtleneck
高圆翻领；高圆翻领衣服