[ 'vi:ləm ]
■ noun ( plural vela -lə )
1》 Zoology a membrane, typically bordering a cavity, especially in certain molluscs, medusae, and other invertebrates.
2》 Botany the veil of a toadstool.
3》 Anatomy the soft palate.
Origin
C18: from L., lit. 'sail, curtain, covering, veil'.