Definitions of band:

• noun:   something elongated that is worn around the body or one of the limbs
• noun:   a strip or stripe of a contrasting color or material
• noun:   a restraint put around something to hold it together
• noun:   a strip of material attached to the leg of a bird to identify it (as in studies of bird migration)
• noun:   a stripe of contrasting color

  Example: "Chromosomes exhibit characteristic bands"

• noun:   a range of frequencies between two limits
• noun:   instrumentalists not including string players
• noun:   jewelry consisting of a circlet of precious metal (often set with jewels) worn on the finger

  Example: "He noted that she wore a wedding band"

• noun:   a group of musicians playing popular music for dancing
• noun:   an unofficial association of people or groups
• verb:   bind or tie together, as with a band
• verb:   attach a ring to the foot of, in order to identify

  Example: "Band the geese to observe their migratory patterns"

• name:  A surname (very rare: popularity rank in the U.S.: #23232)