chupar
suck
chupa
lollipop
+
-ar
verb suffix
Chupar means to suck and can be thought of as chupa0 (lollipop0) + -ar1 (verb suffix1), literally meaning 'to lollipop'.
verb
  1. suck
    To suck or lick
    El bebé chupa su pulgar. // The baby sucks its thumb.