aletear
flap
ala
wing
+
-ear
verb suffix
Aletear means to flap and can be understood as ala0 (wing0) + -ear1 (verb suffix1), literally meaning 'to do something with wings'.
verb
  1. flap
    To flap or flutter wings
    El pájaro aleteó sus alas antes de volar. // The bird flapped its wings before flying.