Grebe or grebe are common names for the bird Podiceps cristatus. It is of Latin etymology for so- ("underneath") merguculus ("diving") because of the ability they have to remain submerged for a long time. In a figurative sense, it is the person who seems discreet and harmless, but in reality is not. It surely takes the concept of "submerged" because it seems calm as the lake until it comes out of one blow with a dam in the beak. See "Dead Mosquito". 3º_ Inflection of the verb somormujar ("somorgujar"). See verbs/grebe.