changeling

Definition of Changeling in English :

a person of subnormal intelligence

2. changeling

a child secretly exchanged for another in infancy

WordNet Lexical Database for English. Princeton University. 2010.

Changeling

noun

1.

a child believed to have been exchanged by fairies for the parents' true child

2. archaic

a.

an idiot

b.

a fickle or changeable person

noun

1.

a child secretly put in the place of another; esp., in folk tales, one exchanged in this way by fairies

2. Archaic

a changeable person; turncoat

3. Archaic

a feeble-minded person

n.

1. A child secretly exchanged for another.

2. In European folklore, a fairy child left in place of a stolen human child.

3. Archaic A changeable, fickle person.

4. Obsolete A person of deficient intelligence.