(n) a person who stifles or smothers or suppresses, Syn. smotherer, Example:he is a real conversation stifler; I see from all the yawn smotherers that it is time to stop
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
. (Chess) Checkmate given when movement of the king is completely obstructed by his own men. This can only occur when an opponent moves a knight into a position to give a check to the king. [ Webster 1913 Suppl. +PJC ]