(countable) A transaction between two persons whereby the first person undertakes in the future to render some service or gift to the second person or devotes something valuable now and here to his use.
(uncountable) Reason to expect improvement or success; potential.
(computing) A placeholderobject that can be manipulated in code before it has been assigned a value.
(countable, obsolete) Bestowal or fulfillment of what is promised.