Dictionary
1plug–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>
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First Known Use of PLUG-IN
1922
2plug–in
noun
computers : a small piece of software that adds a feature to a larger program or makes a program work better
Full Definition of PLUG-IN
1
: something that plugs in
2
: a small piece of software that supplements a larger program (as a browser)
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First Known Use of PLUG-IN
1946
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