you should go visit the trap museum in atlanta and ask them to refute and give a definition
...but really, TI coined the term but memphis started that shyt with 8Ball MJG, 3-6 Mafia, etc stemming from horrorcore rap infused with drug culture. half of atlanta still sample those guys for trap beats, reflipped hooks, and inspirations, don't get it twisted
"Trap House 3" by Gucci Mane contains a sample of another track. Listen to both tracks on WhoSampled, the ultimate database of sampled music, cover songs and remixes.
www.whosampled.com
but yeah, whenever wannabe DJs want to make a trap beat without lyrics for raves and shyt, that shyt lost all meaning, and it's up for the culture to invent something new because it got culturally appropriated or the new generation took over and made some talentless off-beat incoherent nonsense