What is the definition of cultures?

Society

Culture is a system of societal rules and behavior. It has been used to mean the more sophisticated or refined etiquette of a time. Culture is what people believe, how they act and interact, and the way they live.

Culture is the specific traits, behaviors, attitudes, and traditions passed on through the generations of families. This also includes beliefs and any other things that have come from your family specifically.

Biology

Culture is a separate bacterial colony grown in the lab for experimental or diagnostic purposes. They can be used to determine the presence of bacteria by multiplying their numbers in a growth medium.
The characteristics of a society or group. Ex. The type of religion that is practiced.