Definitions of meter:

• noun:   any of various measuring instruments for measuring a quantity
• noun:   rhythm as given by division into parts of equal time
• noun:   (prosody) the accent in a metrical foot of verse
• noun:   the basic unit of length adopted under the Systeme International d'Unites (approximately 1.094 yards)
• verb:   measure with a meter

  Example: "Meter the flow of water"

• verb:   stamp with a meter indicating the postage

  Example: "Meter the mail"

• name:  A surname (very rare: popularity rank in the U.S.: #50420)