/ˈvɪləs ||; ˈvɪləs/noun [C] (plural villi /ˈvɪlaɪ ;-li:||; ˈvɪlaɪ/) (technical术语) any one of the many small thin parts that stick out from some surfaces on the inside of the body (for example in the INTESTINE). Villi increase the area of these surfaces so that substances can be taken into the body more easily. 绒毛（长于人体内，如肠壁上，有扩大有关器官面积的作用，有利身体吸收物质）