definition of
[scupper]

[1] #1 scupper n. drain that allows water on the deck of a vessel to flow overboard. wn

[2] #2 scupper v. [ambush, bushwhack, waylay, lurk, ambuscade, lie in wait] wait in hiding to attack. wn

[3] #3 scupper v. [queer, expose, endanger, peril] put in a dangerous, disadvantageous, or difficult position. wn