Definition of "Lose" :
verb: be set at a disadvantage
"The painting loses something in this light."
verb: withdraw, as from reality
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: allow to go out of sight or mind
"Lose the crowds by climbing a mountain."
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