chafar
crush
chaff
husks of grain
+
-ar
verb suffix
Chafar means to crush and can be remembered by thinking of crushing chaff0 (husks of grain0) with the -ar1 (verb1) ending.
verb
  1. crush
    To crush, squash, or flatten something
    El coche chafó la lata vacía. // The car crushed the empty can.
  2. disappoint
    To disappoint or ruin someone's plans or expectations
    La lluvia chafó nuestros planes de picnic. // The rain ruined our picnic plans.