1.Definition: a large sea wave

Related Noun(s):billow

Category: General

2.Definition: a sudden forceful flow

Related Noun(s):rush, spate, upsurge

Category: General

3.Definition: a sudden or abrupt strong increase

"Stimulated a surge of speculation", "An upsurge of emotion", "An upsurge in violent crime"

Related Noun(s):upsurge

Category: General