[1] : The Collaborative International Dictionary of English v.0.48

verb \verb\, n. f. verbe, l. verbum a word, verb. see word.
   1. a word; a vocable. obs. --south.
      1913 webster

   2. gram. a word which affirms or predicates something of
      some person or thing; a part of speech expressing being,
      action, or the suffering of action.
      1913 webster

   note: a verb is a word whereby the chief action of the mind
         the assertion or the denial of a proposition finds
         expression. --earle.
         1913 webster

   active verb, auxiliary verb, neuter verb, etc. see
      active, auxiliary, neuter, etc.
      1913 webster
see also:
word active verb auxiliary verb neuter verb active auxiliary 
neuter 

Neuter >> N Words
Neuter, definition of term: Neuter
neuter_pag1.html

Passive Verb >> P Words
Passive Verb, definition of term: Passive Verb
passive+verb_pag1.html

Auxiliary Verb >> A Words
Auxiliary Verb, definition of term: Auxiliary Verb
auxiliary+verb_pag1.html

Active Verb >> A Words
Active Verb, definition of term: Active Verb
active+verb_pag1.html