1. 頭と続いている胸びれを持つ、長い鼻と厚い尾の大型食用エイ(large edible rays having a long snout and thick tail with pectoral fins continuous with the head)
2. 足の交互の働きにより着用者が滑り、進めることができるスポーツ装置(sports equipment that is worn on the feet to enable the wearer to glide along and to be propelled by the alternate actions of the legs)