cup grease

noun

: a grease used in grease cups
especially : a mixture of a mineral oil and lime or soda soap with or without other ingredients (as rosin, oil, graphite, mica)

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“Cup grease.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cup%20grease. Accessed 23 Mar. 2023.

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