abatir
knock down
a-
to, towards
+
batter
to hit repeatedly
Abatir means to knock down and can be thought of as a-0 (to, towards0) + batter1 (to hit repeatedly1), implying the action of hitting something until it falls.
verb
  1. knock down
    To knock down, overthrow, or defeat
    El viento fuerte abatió varios árboles. // The strong wind knocked down several trees.