gloss over - Dictionary definition and meaning for word gloss over
gloss is the shine of something. to commit a mistake is to put a scratch, so to repair that u need to gloss over or smoothen it.
gloss over: g(loss) c(over) the loss(error)
to put a "Glass" "Over" something to avoid it->Thus, "Gloss Over" means to avoid talking about something unpleasant in detail