This phrase is worth noting precisely because it does not belong in this dictionary: it makes sense in a moral universe that has utterly vanished. The last "cad and bounder" died, perhaps, about 1947 (see London Daily Telegraph obituaries for further evidence).
Although they are appropriately linked, the precise meanings differ. A "cad" is one who does harm to a woman'shonor or sense of self-worth as, for example, by taking her for a garden walk when he has no intention of marrying her. A "bounder" is a presumptious upstart, seemingly ignorant of, but perhaps merely indifferent to, fundamental norms of propriety.
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the USCoast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.