A small object that is a choking hazard. Often used in context when talking about babies, toddlers, and children when they get their hands on something that is small enough where they can choke on it.
Michael (husband): Hey honey, look the baby loves chocolate covered almonds.
Sandy (wife): Are you fucking kidding me? Get those almonds away from him. That's a chokeable!
Michael: Ooops. Sorry.
A person you hate intensely not because they deserve such hatred but because they serve as a focus for your general hatred. A healthy way to dispense with excess animosity.
Jake's not really that big an asshole. He just serves as my hate sink.