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  1. Oxford American Dictionary

    woolly adelgid

    • IPA[ˌwo͝olē əˈdeljid]

    美式

    • n.
      any of several small aphid-like insects that feed on conifers, especially hemlocks, spruces, and firs. By sucking the sap from young twigs, the insect retards or prevents tree growth and causes needles to discolor and drop prematurely.

    • noun: woolly adelgid, plural noun: woolly adelgids