Deep plantar tendons connected by a vinculum.
He denotes quantities by the letters of the alphabet, retaining the vowels for the unknown and the consonants for the knowns; he introduced the vinculum and among others the terms coefficient, affirmative, negative, pure and adfected equations.
A perfect obligation is one which is directly enforceable by legal proceedings; an imperfect or moral obligation (the naturalis obligatio of Roman law) is one in which the vinculum juris is in some respects incomplete, so that it cannot be directly enforced, though it is not entirely destitute of legal effect.
Tendon of the flexor hallucis longus muscle sending a strong vinculum to that of the flexor profundus muscle, the tendon of which goes to the third toe only.
In English law obligation is used in at least four senses - (1) any duty imposed by law; (2) the special duty created by a vinculum juris; (3) not the duty, but the evidence of the duty - that is to say, an instrument under seal, otherwise called a bond; (4) the operative part of a bond.