changeling

n.
1.child left by the fairies in place of one they had sto-len（过去民间传说）被仙女偷换后留下的婴孩。
△Mid.2.1.23:“She never had so sweet a changeling；”这样可爱的小孩她从来没有偷换过。
2. thing substituted for another by stealth被偷换后留下来之物。
△Ham.5.2.53: “The changeling neverknown.”这封掉了包的假信，谁也看不出来。
3. changer of side,turncoat,renegade改变立场的人，变节者，叛徒。
△1H.Ⅳ.5.1.74:“To face the garment ofrebellion/With some fine colour that may please theeye/Of fickle changelings and poor discontents，”用美好的颜色把叛乱的外衣装饰一下，好让那些反复无常的变节者和不满现状的可怜虫看了高兴。