A hip flask is a small flat bottle carried in a pocket. Fill the hip flask.
The curve is shaped to the body, which is what makes it flat enough to hide. A hip flask is a traditional present and is used about twice.
1nounhip flaskA small flat bottle carried in a pocket.
“The hip flask came out at half time in every match.”
hip flask is a bottle.
Named from being carried on the hip, where the curved shape sits flat.
From being a flask that was originally meant to be worn on the hip.
Etymology from Wiktionary, CC BY-SA
Practised in Containers & Packaging