labyrinthine sense la·by·rint·hinesense uncommon noun 1. a sensory system located in structures of the inner ear that registers the orientation of the head Synonymsequilibriumlabyrinthine sensevestibular sensesense of balancesense of equilibrium Related words Word family equilibrate Broader terms proprioception WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.