Word: callback
Part of speech: Noun
Syllables: call
back
Definition: A return telephone or radio call; especially one made automatically to authenticate a logon to a computer network.
Morphemes:
Affix: call
Language: en
PoS: Noun
Meaning: An instance of calling someone on the telephone.
Affix: back
Language: en
PoS: Verb
Meaning: To write upon the back of, possibly as an endorsement.