WordWeb Online

1. Lie adjacent to another or share a boundary
   "Canada adjoins the U.S.";
   - border, edge, abut, march, butt, butt against, butt on
    
2. Be in direct physical contact with; make contact
   "The two buildings adjoin";
   - touch, meet, contact
    
3. Attach or add
   "I adjoin a copy of my lawyer's letter"

Derived forms: adjoins, adjoining, adjoined

Type of: add