"Glazing" has several meanings depending on the context:

• Traditionally, glazing refers to the process of fitting glass into windows or doors, or the glass panes themselves. It also means applying a shiny coating or finish to a surface, such as glazing a pastry with egg or ceramics with a glossy layer

• In modern slang, especially on social media, "glazing" means showering someone with excessive praise or admiration, often to the point of exaggeration or overhyping. It can carry a slightly negative connotation, implying someone is being overly partial or "sucking up" to another person

So, glazing can mean either a physical application of glass or a shiny coating, or figuratively, giving someone too much praise or flattery.