n. & adj.
--n.
1. a the causing of death. b an instance of this.
2 a great (esp. financial) success (make a killing).
--adj. colloq.
1. overwhelmingly funny.
2 exhausting; very strenuous.
Phrases and idioms:
killing-bottle a bottle containing poisonous vapour to kill insects collected as specimens.
Derivatives:
killingly adv.