Apps, Tools and Patches that aren't allowed on the Apple AppStore.
iOS Tweaks are made by Tweak developers, and can be installed on Jailbroken devices through Jailbreak Package Managers.
iOS Tweaks usually customize iOS's default UI or add some functionalities that aren't available on iOS.
People: "oh how did you make your Volume bar look like this?"
You: "it's a Tweak named RetroVol. btw there are lots of other cool iOS Tweaks to customize your iPhone"
1. A man who pretends to be your friend but steals from you when your back is turned. Also will be fronted large amounts of methamphetamine then skip out on the bill because you hurt his feelings when calling him out on his own shit.
2. See also Jake Place or "little bitch"
"Dude did you hear that Kristi lost her house? It's all because of that Tweaker scum who stole her shit and never paid her back. Man he really Jake Placed her ass."