dripper

From drip + -er.

dripper (plural drippers)

1. Agent noun of drip: one who drips.
2. A dripping cake.
3. An outlet in the microtubing used in drip irrigation.
4. Synonym of drip tip.
   • 2015, Vaping 101: Everything You Need To Know:

     The act of preparing a wick to vape, usually done by adding a few drops and soaking the wick in e-juice or taking a few pulls without heating the coil. This is not relevant for drippers/drip-style atomizers.

   • 2018 March 1, Steven Kahn, “Drippers vs Tanks – Electronic Cigarettes”, in Gazette Review:

     However, there are actually two ways of delivering the tasty flavoring (and nicotine, if you’re into that) into your mouth using an atomizing method; you could use a tank, or you could use a dripper.