1) a metal pin for fixing metal plates (e.g. in a ship's sides), the end being hammered flat to prevent slipping (rivet)
sad; depressed; ill; from a high(er) level to a low(er) one
below; physically lower
the part of a story or drama (after the climax) when the leading character suffers (before the final catastrophe or resolution)
dropping
likely to cause worse conditions
reverting