noun
dynamo
DEYE-nuh-moh
noun
1
A machine that converts mechanical motion into electrical current.
"The old bicycle had a dynamo that powered its front lamp."
2
An extremely energetic and productive person.
"Their new striker is an absolute dynamo on the pitch."
How to Use Dynamo
Learner’s notesIn plain EnglishA device that generates electricity from movement, or a tirelessly energetic person.
Common pairings
bicycle dynamo
a real dynamo
Word Forms
dynamos plural
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The old bicycle had a _____ that powered its front lamp.
Etymology
A shortening of "dynamo-electric machine", built from the Greek root dúnamis, meaning power.