verb/ɡatiˈʝaɾ/
to shell out, fork out (pay); to trigger a firearm
“Gran parte de la presente temporada de "The Big Bang Theory" ha girado en torno al quiebre de la relación entre los personajes interpretados por Jim Parsons y Mayim Bialik, y su posterior reconciliación que gatilló que exista mayor intimidad entre ambos.” — A large part of the current season of "The Big Bang Theory" has revolved around the breakdown of the relationship between the characters played by Jim Parsons and Mayim Bialik and their subsequent reconciliation that triggered [that there exists] greater intimacy between the two.
From gatillo + -ar.