Grandma (noun)

1. A mother of one's parent.
2. A mother's mother.
3. An elderly woman who is a grandmother.

Origin:

Grand + ma.

Examples:

1. She went to visit her grandma.
2. He always calls his grandma on Sundays.
3. Grandma's cookies are the best.
4. Grandma's knitting is famous among the family.
5. Grandma's wisdom is always valued.