flask - noun

a container for liquids. synonyms: bottle, container, vessel, hip flask, vacuum flask;

• a narrow-necked glass container, typically conical or spherical, used in a laboratory to hold reagents or samples.
• a metal container for storing a small amount of liquor, typically to be carried in one's pocket.

Saturday we climbed Blue Room in perfect sunshine. Sunday we intended to climb Elephant Head Gully, but it was occupied so we climbed Watership Down instead. Great trip.