Word: wheelhorse
Part of speech: Noun
Syllables: wheel
horse
Definition: A person who labors heavily for a particular cause, without being concerned about recognition.
Morphemes:
Affix: wheel
Language: en
PoS: Noun
Meaning: A person with a great deal of power or influence; a big wheel.
Affix: horse
Language: en
PoS: Noun
Meaning: A large and sturdy person.