Meaning of “power” - Learner’s Dictionary

power

noun uk us /paʊər/
CONTROL [ U ]

B2 control or influence over people and events:

He likes to have power over people.
POLITICS [ U ]

B2 political control in a country:

They have been in power too long.
When did this government come to power (= start to control the country)?
ENERGY [ U ]

B1 energy, usually electricity, that is used to provide light, heat, etc:

nuclear power
Turn off the power at the main switch.
COUNTRY [ C ]

a country that has a lot of influence over others:

a major world power
OFFICIAL RIGHT [ C, U ]

an official or legal right to do something:

[ + to do sth ] It's not in my power to stop him publishing this book.
STRENGTH [ U ]
ABILITY [ U ]

a natural ability:

to lose the power of speech
do everything in your power to do sth

to do everything that you are able and allowed to do:

I've done everything in my power to help him.
the powers that be

important people who have authority over others

→ See also balance of power

(Definition of “power noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)