1 [C] a wild plant that is not wanted in a garden because it prevents other plants from growing properly 杂草；野草
2 [U] a mass of very small green plants that floats on the surface of an area of water （浮在水面的）水生植物
weed²
/wi:d ||; wid/verb [I,T] to remove weeds from a piece of ground, etc 除去杂草 weed sth/sb out to remove the things or people that you do not think are good enough 除去；剔除；淘汰: He weeded out all the letters with spelling mistakes in them.他把有拼写错误的信筛掉。