dynamo

1 ENTRIES FOUND:
dynamo /ˈdaɪnəˌmoʊ/ noun
plural dynamos
dynamo
/ˈdaɪnəˌmoʊ/
noun
plural dynamos
Britannica Dictionary definition of DYNAMO
[count]
1 
: a machine that produces electricity : generator
2 
informal : someone who has a lot of energy