This is the 159th most frequent Hindi word.
ए
"ए" in Hindi is a vocative exclamation used to call or address someone, similar to "Hey" or "O" in English.
Here, 'ये' is used as a demonstrative pronoun meaning 'this'.
क्या ये आपकी किताब है?
Is this your book?
In this sentence, 'ये' again acts as a demonstrative pronoun referring to 'this' (food).
तुम ये खाओ, बहुत स्वादिष्ट है।
Eat this, it's very tasty.
Here, 'ये' serves as the subject demonstrative pronoun 'It' to introduce the statement.