Definitions of waver:

• noun:   the act of moving back and forth
• noun:   someone who communicates by waving
• noun:   the act of pausing uncertainly
• verb:   sway to and fro
• verb:   pause or hold back in uncertainty or unwillingness
• verb:   be unsure or weak
• verb:   give off unsteady sounds, alternating in amplitude or frequency
• verb:   move back and forth very rapidly
• verb:   move hesitatingly, as if about to give way
• verb:   move or sway in a rising and falling or wavelike pattern
• name:  A surname (very rare: popularity rank in the U.S.: #44920)