catch·fly /ˈkæʧˌflaɪ, ˈkɛʧ-/
  捕蟲草
  Catch·fly n. Bot. A plant with the joints of the stem, and sometimes other parts, covered with a viscid secretion to which small insects adhere. The species of Silene are examples of the catchfly.
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  catchfly
       n 1: any plant of the genus Silene [syn: silene, campion]
       2: mostly perennial herbs with sticky stems that catch insects;
          widespread in north temperate zone [syn: lychnis]