Definition of "vocab"

vocab

noun
usually uncountable, plural vocabs
1. (informal) Vocabulary, especially that acquired while learning a language.
  Quotations
  Shaggy: Please! This time don't say "Split up!"Fred: Fine! Divide into two groups!Shaggy: Changing the vocab! Should have seen that coming!Scooby: Jerk move, Jones!
  2018, “World of Witchcraft”, in Be Cool, Scooby-Doo!