double bubble

English Wikipedia has an article on:

Double bubble (radiology)

Wikipedia

double bubble (countable and uncountable, plural double bubbles)

1. (radiology) The presence of two air-filled bubbles in the abdomen, often indicating various pathological conditions.
2. (aviation) A fuselage formed from two conjoined hulls.
3. (slang) Overtime paid at twice the normal rate.
   • 2012, Brandon Massey, Voices From The Other Side, page 176:

     I feel you, man. But if you don't want the overtime, I'll work a double-bubble for you. Cool?

   • 2017, Tim O'Rourke, The Mirror Realm:

     He had been on leave, but when his supervisor had called him at home and offered him 'double-bubble' overtime to cover a colleague who had gone sick, he had been unable to refuse.

4. (mathematics) A certain meeting of spherical surfaces, relevant to the double bubble conjecture.

• double bubble conjecture
• double bubble mint