A girl that sleeps with men using the popular dating application called Tinder. This is aportmanteau of the words "Tinder" and "Slut". Hence it is a slut who uses Tinder.
Bro #1: My bro hank-the-tank totally railed like 8 tindersluts last month. I can't believe it
Bro #2: No way bro, that's awesome, I gotta get that app!
When a bro shows you a hot Tinder match and you creep on her Instagram in attempt to "Snatch" the match.
Bro 1-"Dude. Bro. You gotta see this hottie I just matched with."
Bro 2-"Wow! Does she have an Instagram?"
Bro 1-"NO WAY! You can't Tindersnatch this one!"