Example sentence - The small girl held a pink unicorn in her arms.
The unicorn that resided in the glade was gaurded by minotaurs.
the Unicorn was a lovely mythical animal
The unicorn pranced merrily in the meadow with his leprechaun friends.
Charlie the unicorn and his "friends" found the amulet of wonder and took it to the banana king.
I hope that Pegasus gets along well with the unicorn.
Silly Sentence: Dan had a plan to build a house with windows in the sand.
The correct usage is a unicorn. It is the starting sound of the word that controls, not the letter.
Although unicorn starts with a vowel, we say and write a unicorn because the long U in a unicorn sounds like the Y in a yam or a yellow bus.
We're going on a trip. We're both staying here tonight. We're going to take revenge on the guy who stole my unicorn!
Everything
The little girl's story of how she had a unicorn in her backyard was such an absurdity.
The unicorn slowly tumulted toward the ground after he was pushed off the plane. lol :)