to become a member of a group, club, or organization
I decided to join the chess club at school.
She joined the company as an intern last summer.
to go somewhere in order to be with someone or to take part in an activity with others
Please join us for dinner tonight.
We joined the children in building a sandcastle on the beach.
to connect or fasten two or more things so they become one
She used glue to join the broken vase pieces together.
Can you join these two wires so the lamp will work?
✦ From Old French joindre, from Latin iungere “to yoke, connect”.
(of roads, rivers, lines, etc.) to meet or come together at one point
The two rivers join just north of the town.
This path joins the main road after the bridge.
the place or line where two things are connected together
You can hardly see the join between the two metal plates.
The wallpaper is coming loose at the join.
a place in the body where two bones meet and can move
The doctor said the pain in my knee joint should improve with rest.
Yoga helps keep every joint in the body flexible.
✦ Middle English, from Old French ‘joint’, from Latin ‘junctus’, the past participle of ‘jungere’ meaning “to join”.
the point where two parts of an object or structure are connected
The carpenter added glue to each wooden joint for extra strength.
Loose metal joints in the bridge must be tightened regularly.
shared or done together by two or more people, groups, or things
They opened a joint bank account after getting married.
The companies issued a joint statement about the merger.