Definitions of lose:

• verb:   allow to go out of sight
• verb:   miss from one's possessions; lose sight of
• verb:   fail to keep or to maintain; cease to have, either physically or in an abstract sense
• verb:   fail to get or obtain
• verb:   fail to make money in a business; make a loss or fail to profit
• verb:   fail to win
• verb:   suffer the loss of a person through death or removal
• verb:   fail to perceive or to catch with the senses or the mind
• verb:   retreat
• verb:   be set at a disadvantage
• verb:   place (something) where one cannot find it again
• name:  A surname (very rare: popularity rank in the U.S.: #35314)