the act or an instance of losing possession
the harm or privation resulting from loss or separation
a person, thing, or amount lost
The woman who retired is a great loss to her firm
failure to gain, win, obtain, or use something
The team went home downhearted after their loss
an amount by which cost exceeds revenue
We made a loss on the sale of the house
at a loss
uncertain or puzzled
not making enough money to cover costs
[Middle English los, prob back-formation from lost, past part. of losen: see lose]