Real Dictionary

grace
The graces are the ways of behaving and doing things which are considered polite and well-mannered.
You use expressions such as Your Grace and Her Grace when you are addressing or referring to a duke, duchess, or archbishop.
uncountable noun: Grace is used in expressions such as a day's grace and a month's grace to say that you are allowed that amount of extra time before you have to finish something.
uncountable noun: If someone behaves with grace, they behave in a pleasant, polite, and dignified way, even when they are upset or being treated unfairly.
uncountable noun: If someone moves with grace, they move in a smooth, controlled, and attractive way.
uncountable noun: In Christianity and some other religions, grace is the kindness that God shows to people because he loves them.
variable noun: When someone says grace before or after a meal, they say a prayer in which they thank God for the food and ask Him to bless it.
verb: If you say that someone important will grace an event or an organization, you mean that they have agreed to be present at the event or to be part of the organization.
verb: If you say that something graces a place or a person, you mean that it makes them more attractive.

Grace in American English
a feminine name: dim. Gracie
noun: a female given name
noun: elegance or beauty of form, manner, motion, or action

grace in British English
noun: elegance and beauty of movement, form, expression, or proportion

Grace in British English 1
noun: a title used to address or refer to a duke, duchess, or archbishop

Grace in British English 2
noun: W(illiam) G(ilbert). 1848–1915, English cricketer