1

plug-in

adjective \ ˈpləg-ˌin \

Definition of plug-in

:designed to be connected to an electric circuit by plugging in
  • a plug-in toy
  • a plug-in circuit board

First Known Use of plug-in

1922


2

plug-in

noun

Definition of plug-in

1 :something that plugs in
2 :a small piece of software that supplements a larger program (such as a browser)

First Known Use of plug-in

1946


plug in

verb

Definition of plug in

intransitive verb
:to establish an electric circuit by inserting a plug
transitive verb
:to attach or connect to an electric receptacle (such as an outlet)

First Known Use of plug in

1903


PLUG-IN Defined for English Language Learners

plug-in

noun

Definition of plug-in for English Language Learners

  • computers : a small piece of software that adds a feature to a larger program or makes a program work better



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