Definition of plug-in
- a plug-in toy
- a plug-in circuit board
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'plug in.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
computers : a small piece of software that adds a feature to a larger program or makes a program work better
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of very fine texture or delicate form
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