creance /ˈkrēəns/ noun:
A long, light cord used to tether a bird of prey during training
Late 15th century: from French créance ‘faith’, also denoting a cord to retain a bird of peu de créance (‘of little faith’ i.e. which cannot yet be relied upon).
sans-creance:
Upon learning to trust its master’s hand, the falcon finds the freedom to soar, sans-creance, free and without tether.