adjoin is the dictionary form of adjoiner Definition of adjoin
1
[ verb ] lie adjacent to another or share a boundary

Examples

"Canada adjoins the U.S." "England marches with Scotland"

2
[ verb ] attach or add

Examples

"I adjoin a copy of your my lawyer's letter"

3
[ verb ] be in direct physical contact with; make contact

Synonyms

touch meet contact

Examples

"The two buildings touch" "Their hands touched" "The wire must not contact the metal cover" "The surfaces contact at this point"

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