%holothurian%

a. (Zool.) Belonging to the Holothurioidea. -- n. One of the Holothurioidea. [ 1913 Webster ]

☞ Some of the species of Holothurians are called sea cucumbers, sea slugs, trepang, and bêche de mèr. Many are used as food, esp. by the Chinese. See Trepang. [ 1913 Webster ]