6D P-R-O-R 'This type of game is played indoors'.
We have ground out all the other answers but would appreciate help with this one.
Thanks in anticipation....
GK890 December 6th
2d tube used as a means of regulating flows of liquids -E-T--I
6d any of a series of soviet space probes L-N-K. It must be LUN-K!
Thanks you smart people....