A person who engages in swan upping.

Used other than figuratively or idiomatically: see upper, crust. The topmost layer of a bread, pastry dish, or other item with a hardened coating.

Alternative form of upper-crust

plural of upper crust

of high social position / aristocratic

(idiomatic) Advantage or control.

those people at the top of a social hierarchy / the aristocracy

a Slavic language spoken in part of Saxony

(anatomy) The section of an arm from the elbow to the shoulder.

The capital letters A, B, C, ... as opposed to the small letters a, b, c, ....