panpipes, a musical instrument, played by mouth, comprising tubes arranged in order of length.

A toilet that uses water to flush urine and feces through a pipe to another location, typically a sewer main in urban settings or a septic tank elsewhere.

To plump up / (idiomatic) to make a gaffe or blunder. Euphemism for fuck up.

(physics) A substance at a temperature and pressure above its own thermodynamic critical point that can diffuse through solids like a gas and dissolve materials like a liquid.

In photometry, the measure of the power of light as perceived by the human eye, in proportion to the power at each wavelength.

plural of magnetic flux density

(physics) The measurable component of the response of a medium to the presence of a magnetic field.

A type of fluorescent lamp (that may or may not contain mercury).

(organic chemistry) The fluorinated alkene CH₂=CHF that is used to make polyvinyl fluoride

(physics, chemistry) An analytical technique that analyzes the fluorescence produced by a sample; fluorometry or spectrofluorimetry.