Is unicorn have a long vowel sound?

Let's break down the word "unicorn" to see if it has a long vowel sound:

* "uni-": This part of the word has a short vowel sound, similar to the "u" in "cup."

* "corn": This part of the word has a short vowel sound, similar to the "o" in "cot."

Therefore, "unicorn" does not have a long vowel sound.