plug-in
1 of 3adjective
ˈpləg-ˌin 
: designed to be connected to an electric circuit by plugging in
a plug-in toy
a plug-in circuit board
plug-in
2 of 3noun
1
: something that plugs in
2
: a small piece of software that supplements a larger program (such as a browser)
plug in
3 of 3verb
plugged in; plugging in; plugs 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)
Word History
First Known Use
Adjective
1922, in the meaning defined above
Noun
1946, in the meaning defined at sense 1
Verb
1903, in the meaning defined at intransitive sense
- have got something down to a science
- have got the time
- have got to
- have got to go
- have had it
- have half a mind
- have half an eye on
- have hysterics
- have ice water in her veins
- have in common
- have in mind
- have in one's possession
- have in the palm of one's hand
- have issues
- have it
- have it coming
- have it coming (to one)
- have it coming to one
- have it good
- have it in for
- have it in mind
- have it in one
- have it made
- have it made in the shade
- have it on excellent authority