macanazo
blow
macana
club, stick
+
-azo
augmentative suffix, forceful action
Macanazo means blow and can be understood as macana0 (club or stick0) + -azo1 (forceful action1), implying a forceful blow with a club-like object.
noun
- blowA hard blow or hit, especially with a club or stickEl policía le dio un macanazo al ladrón. // The policeman gave the thief a blow with his baton.