dead·lock /'ded-ˌläk/ n: a state of inaction resulting from the opposition of equally powerful uncompromising persons or factions: as
a: the state of a jury unable to agree on a verdict see also allen charge
b: impasse
c: a state in which corporate directors are unable to perform their functions because of shareholder voting
deadlock vb
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.