noun

a sensation of whirling and a tendency to fall or stagger; dizziness.

symptoms include nausea, vomiting, and giddiness

dizziness,light-headedness,loss of balance/equilibrium,spinning/swimming of the head,faintness,weakness at the knees,unsteadiness,shakiness,wobbliness,mirligoes,dwalm,wooziness,legs like jelly,rubbery legs,megrim,sturdy,scotoma,turnsick,vertiginousness