something in which something else is fixed or fastened; a position of an instrument such as 'high' or 'low'; the act of (the Sun, Moon etc) going down
scene, background
Cases of word usage
1) (of) a person setting fire to property unlawfully and with an evil purpose; (of) a bomb causing fire (incendiary)
2) (a musical setting for) a special mass for the souls of the dead (requiem)