Definitions of stagger:

• noun:   an unsteady uneven gait
• verb:   to arrange in a systematic order

  Example: "Stagger the chairs in the lecture hall"

• verb:   astound or overwhelm, as with shock

  Example: "She was staggered with bills after she tried to rebuild her house following the earthquake"

• verb:   walk as if unable to control one's movements

  Example: "The drunken man staggered into the room"

• verb:   walk with great difficulty

  Example: "He staggered along in the heavy snow"

• name:  A surname (very rare: popularity rank in the U.S.: #54077)