A mixture of plaster of Paris and glue used to prepare a surface for painting.
A work of art done in gesso.
Yes, expressing noncommittal agreement or consent.
Yes; of course.
You're welcome; polite response to being thanked.
Physically secure and certain, non-failing, reliable.
Certain to act or be a specified way.
Certain in one's knowledge or belief.
Without doubt, certainly.