pine-needle oil
noun
: a colorless or yellowish bitter essential oil obtained from the needles of various pines (as Pinus sylvestris or P. mugo) and used in medicine chiefly as an inhalant in treating bronchitis
Cite this Entry
“Pine-needle oil.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/pine-needle%20oil. Accessed 29 Nov. 2025.
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