Definition of surges:
(n) :
A sudden transient rush, flood or increase.
(n) :
(electricity) A sudden electrical spike or increase of voltage and current.
(v) :
(intransitive) To rush, flood, or increase suddenly.
(n) :
The maximum amplitude of a vehicle's forward/backward oscillation.
(n) :
(nautical) The swell or heave of the sea (FM 55-501).
(n) :
(US, naval, often attributive) A deployment in large numbers at short notice.