--verb (verb: adjoin; 3rd person present: adjoins; past tense: adjoined; past participle: adjoined; gerund or present participle: adjoining)

1. to lie adjacent to another or share a boundary.
  • "Canada adjoins the U.S.."
2. to attach or add.
  • "I adjoin a copy of your my lawyer's letter."
3. to be in direct physical contact with; to make contact.
c.1325, from Old French ajoin- stem of ajoindre, from Latin adjungere "join to", from ad- "to" + jungere "to bind together."