"PLU" can have multiple meanings depending on the context. Here are a few possibilities:

1. PLU is the abbreviation for "Price Look-Up." In retail, PLU codes are used to identify and track products for pricing and inventory purposes. Each product is assigned a unique PLU code that can be entered at the point of sale to retrieve its price.

2. "PLU" is also the abbreviation for "People Like Us." It is often used on social media to refer to a group of people who share similar interests, opinions, or experiences.

3. "PLU" can also stand for "Pacific Lutheran University," a private university located in Tacoma, Washington, United States.

Please provide more context if you are referring to a different meaning of "PLU."