itching 名詞
  癢,搔癢
  Itch v. i. [imp. & p. p. Itched p. pr. & vb. n. Itching.]
  1. To have an uneasy sensation in the skin, which inclines the person to scratch the part affected.
     My mouth hath itched all this long day.   --Chaucer.
  2. To have a constant desire or teasing uneasiness; to long for; as, itching ears. “An itching palm.”
  itching
       n : an irritating cutaneous sensation that produces a desire to
           scratch [syn: itch, itchiness]