Definition of pro-drop in English:

pro-drop

adjective

Linguistics
  • Designating a parameter or feature of certain languages whereby subject pronouns are usually omitted; designating or relating to a language of this type.

noun

Linguistics
  • The omission of subject pronouns; this linguistic parameter.

Origin

1970s. From pro- + drop.

Pronunciation

pro-drop

/ˈprəʊdrɒp/