1

plug–in

play
adjective \ˈpləg-ˌin\

Definition of plug–in

  1. :  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. 1 :  something that plugs in

  2. 2 :  a small piece of software that supplements a larger program (such as a browser)

First Known Use of plug–in

1946


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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