Noah Webster's New International Dictionary of the English Language

1. (superl.) Laughingly gay; overflowing with good humor and good spirits; jovial; inclined to laughter or play ; sportive.

2. (superl.) Cheerful; joyous; not sad; happy.

3. (superl.) Causing laughter, mirth, gladness, or delight; as, / merry jest.

4. (n.) A kind of wild red cherry.