velar
watch over
veil
cover
+
-ar
verb suffix
Velar means to watch over and can be thought of as veil0 (cover0) + -ar1 (verb suffix1), like covering something with your watchful gaze.
verb
  1. watch over
    To watch over, guard, or keep vigil.
    Los padres velan por la seguridad de sus hijos. // Parents watch over their children's safety.