scupper (
http://definr.com/scupper)
n : drain that allows water on the deck of a vessel to flow
overboard
v 1: wait in hiding to attack [syn:
ambush,
bushwhack,
waylay,
lurk,
ambuscade,
lie in wait]
2: put in a dangerous, disadvantageous, or difficult position
[syn:
queer,
expose,
endanger,
peril]