Mil. [Fr.: see Littré.] A mine containing a small charge of powder, placed in a wall of earth between the galleries of besieged and besieger, so as, in exploding, to bury, suffocate, or cut off the retreat of the miner on the opposite side; a ‘stifler.’

1

1836.  in Penny Cycl., VI. 197/1. Camouflet or Stifler.

2

1847.  in Craig.

3