What is the measning of "karma"

Karma in Indian religions is the concept of "action" or "deed", understood as that which causes the entire cycle of cause and effect (i.e., the cycle called saṃsāra) originating in ancient India and treated in the Hindu, Jain, Buddhist and Sikh religions

For more details you may refer this link https://en.wikipedia.org/wiki/Karma or search for "karma" on the internet.