From Latin obtūrāre to block up. A term commonly used in ballistics to refer to the ‘gas tight’ seal formed between the projectile and the gun tube during combustion of the propellant.
Obturate, a term used to refer to a sexual act involving three men and a lady in which she is made ‘gas tight’.
by DJR1 April 20, 2011
Can you define these popular missing words?