An interjection used to draw attention or point something out (meaning 'look!', 'see?', 'here!', or 'there!').
ほら、あそこに鳥がいるよ。
Look, there's a bird over there.
ほら、言ったとおりでしょ？
See? I told you so, didn't I?
ほら、ここに名前を書いてください。
Here, please write your name here.
ほれ、これを受け取れ（口語的）。
Here, take this. (colloquial)