Definitions of hail:

• noun:   enthusiastic greeting
• noun:   precipitation of ice pellets when there are strong rising air currents
• verb:   be a native of

  Example: "She hails from Kalamazoo"

• verb:   precipitate as small ice particles

  Example: "It hailed for an hour"

• verb:   greet enthusiastically or joyfully
• verb:   call for

  Example: "Hail a cab"

• verb:   praise vociferously

  Example: "The critics hailed the young pianist as a new Rubinstein"

• name:  A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #9827)