An English wild cherry.
"The old herbalist identified the bitter red fruit hanging from the tree as a merry, noting its use in traditional remedies."
full of or showing high-spirited merriment
"when hearts were young and gay"
"a poet could not but be gay, in such a jocund company"
"the jolly crowd at the reunion"
"jolly old Saint Nick"
"a jovial old gentleman"
"have a merry Christmas"
"peals of merry laughter"
"a mirthful laugh"
Jolly and full of high spirits; happy.
"The children were merry as they danced through the snow during the winter party."
In plain English: Merry means happy and cheerful, especially when you are having fun with friends during celebrations.
"The children were merry after they finished their ice cream treats."
A surname, from nicknames. Originally a nickname for a merry person.
"The Merry family has lived in that village for generations, tracing their name back to an ancestor known for his cheerful disposition."
The word merry comes from Old English words meaning "pleasing" or "delightful," which originally described something pleasant and melodious rather than just happy. This sense of enjoyment traveled directly into Middle English and then modern English without changing its core definition.