Schnösel.

19th century, from Low German Snösel, Snäsel (18th c.). The sense “snotnose”, which Pfeifer considers original, is of very limited attestation and not mentioned at all by early sources such as the Low German dictionaries of Dähnert (1780) and Schütze (1806). Nevertheless it is plausible to associate the onset S(ch)n- with words like Schnabel (“beak”, cf. Grünschnabel), Schnute (“snout”), Schnodder (“snot”, cf. schnodderig). The latter portion of the word seems to be derived from, or at least influenced by, Low German unnösel (cognate of Dutch onnozel). This adjective has a variety of negative meanings ranging from “naive, silly” to “brazen, ill-mannered”, all of which fit the sense “presumptuous young man” well. Cognate with Dutch sneuzel (“greenhorn”), which is a recent acquisition from eastern dialects, however.