cuvettes

/K Y UW1 V EH1 T S/
noun
  1. 1

    A pot, bucket, or basin, in which molten plate glass is carried from the melting pot to the casting table

  2. 2

    A cunette

  3. 3

    A small vessel with at least two flat and transparent sides, used to hold a liquid sample to be analysed in the light path of a spectrometer

  4. 4

    An inner lid of a timepiece

Source: https://en.wiktionary.org/wiki/cuvette, https://en.wiktionary.org/wiki/cuvettes