The term "grunt" can have several different meanings depending on its context.
1) In a general sense, it could refer to any low sound made by an animal or person, such as when lifting heavy objects or exerting physical effort. For example, one might say that the weightlifter gave a grunt of effort while lifting weights.
2) It can also be used in reference to military slang where it means "understood" or "affirmative". For instance, if someone says "grunt", another person would respond with "grunted" indicating they have understood the message and are affirming their response.
3) In a more specific sense, grunt can refer to a type of pork meat that is often ground and used in various dishes such as sausages or hamburgers.
Overall, the meaning of "grunt" varies depending on its context, but it generally refers to a low sound made by exerting physical effort or an affirmative response in military slang.