More broad definitions:
* "The customs, arts, social institutions, and achievements of a particular nation, people, or group." This highlights the tangible aspects of culture like art, food, and traditions.
* "The shared beliefs, values, and practices of a group of people." This emphasizes the intangible aspects of culture, focusing on how people think and behave.
More nuanced definitions:
* "A shared system of meaning and understanding that enables people to communicate and interact effectively." This highlights the importance of culture in facilitating social interaction and understanding.
* "The way of life for a particular group of people, including their beliefs, values, customs, and behaviors." This definition encompasses both the material and the intangible aspects of culture, emphasizing its holistic nature.
The best phrase for you depends on the context in which you are using the term "culture". For example, if you are discussing the culture of a specific nation, the first phrase might be more appropriate. If you are discussing the culture of a particular organization, the second or third phrases might be more relevant.