tocar
to touch
touch
touch
+
-ar
verb suffix
Tocar means to touch and can be thought of as touch0 + -ar1 (verb1).
verb
  1. to touch
    To come into contact with something using the hands or another part of the body
    No toques esa superficie caliente. // Don't touch that hot surface.
  2. to play
    To play a musical instrument
    Ella toca el piano muy bien. // She plays the piano very well.