Noun
(dentistry) A device for carrying out polymerization under pressure.
A thermos-like vacuum flask with a handle on its lid, used to contain water, coffee, or other beverages (from a genericized trademark).
Source: en.wiktionary.orgVSCO girls often complete the look, which requires minimal makeup, by accessorising with scrunchie hair ties, puka shell necklaces, Hydroflask water bottles, and either Crocs, White vans or Birkenstock shoes. Source: Internet