1. A bond of union; a tie
   "The shared experience created a vinculum between the survivors"
    
2. (anatomy) a commissure uniting the two main tendons in the foot of certain birds
    
3. (mathematics) a horizontal line placed over two or more algebraic terms to indicate that they are to be treated as a single unit
   "The vinculum in the fraction bar indicates division"

Derived forms: vincula, vinculums

Encyclopedia: Vinculum