Definitions of hamper:

• noun:   a basket usually with a cover
• noun:   a restraint that confines or restricts freedom (especially something used to tie down or restrain a prisoner)
• verb:   prevent the progress or free movement of

  Example: "He was hampered in his efforts by the bad weather"

• verb:   put at a disadvantage
• name:  A surname (very rare: popularity rank in the U.S.: #84100)