"drain" - key terms from Wikipedia

brain drain
cocaine drain
collector drain
currency drain
data drain
drain
drain	and source
drain	cleaner
drain	current
drain	deimos
drain	intervals
drain	pipe
drain	point
drain	the life
drain	to source voltage
drain	voltage
extended drain
external french drain
french drain
gate to drain
maximum drain
pool drain
s brain drain
septic drain	field
source and drain
source and drain	regions
source to drain
storm drain