merlin noun : a small bird of prey (= a bird that kills other creatures for food ) of the falcon family 

  quisling noun (disapproving ): a person who helps an enemy that has taken control of his or her country    collaborator

bin bag noun (BrE, informal ): a large plastic bag for putting rubbish/garbage in

banal adjective (disapproving ): very ordinary and containing nothing that is interesting or important 

 flick knife BrE (also switchblade BrE, AmE ) noun : a knife with a blade inside the handle that jumps out quickly when a button is pressed 

abed adverb (old use ): in bed 

danger money (BrE ) (US  hazard pay, danger pay ) noun [uncountable]: extra pay for doing work that is dangerous 

   damsel noun (old use ): a young woman who is not married 

upswell ( also upswelling ) noun [singular] ~ of sth (formal ): an increase in sth, especially a feeling 

grass court noun : a tennis court with a grass surface