Sometimes u just need to choose the correct dictionary, besides dictionary.com

1.
A burning desire to be with someone who you find very attractive and extremely special.
My broke when I found out my crush was seeing another person.


2.
a painful experience, very common amoung middle schoolers (and high schooler's and even adults to a lesser degree) that involves being obsessed with a member of the opposite sex (or the same sex, if u prefer), being attracted to them physically (most common), or emotionally- also called 'puppy love'
also: the object of this affection
Verb: crushing
He has a huge crush on her.
Her crush is hot, but unworthy of her affections.
I'm totally crushing on him.

3.
1. the act of falling hard for someone even though it isn't love yet
2. a precursor to love
3. an amazing thing that gives you feelings of nerves and excitement whenever you see them
1. i am so crushing on that new guy in my french class.
2. before we went out, i had a crush on him for almost a year!
3. i can't concentrate in that class. my crush is too powerful.

4.
A person you find to be attractive (physically, mentally, whatever). Also known as 'puppy love'.
Saki: What's with the flamethrower, Vega?
Vega: My crush is dating another woman. So I went home and I got my flamethrower. Now where's that bitch Brianna?