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Headbutt vs Undefined - What's the difference?

headbutt | undefined |

As a noun headbutt

is a sharp blow delivered by driving the head into the opponent, generally by lowering the head and charging forward or by rapidly tilting the head backward and then forward.

As a verb headbutt

is to deliver a sharp blow by driving the head into an opponent.

As an adjective undefined is

lacking a definition or value.

headbutt

English

(wikipedia headbutt)

Alternative forms

* head butt, head-butt

Noun

(en noun)
  • A sharp blow delivered by driving the head into the opponent, generally by lowering the head and charging forward or by rapidly tilting the head backward and then forward.

    • Verb

    (en verb)
  • To deliver a sharp blow by driving the head into an opponent.

    • See also

    * butt heads with * butthead * butt * Glasgow kiss

    Anagrams

    *

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined