tea tree
noun
1
: any of various Australasian shrubs or small trees (genus Leptospermum) of the myrtle family that form dense thickets and have aromatic evergreen foliage
2
: any of various melaleucas (especially Melaleuca alternifolia) with aromatic leaves that yield an essential oil used especially as an antiseptic
Example Sentences
Recent Examples on the Web Black cumin and peppermint work to soothe scalp irritation, while tea tree oil removes buildup. 
Emily Burns, ELLE, 17 Aug. 2022 Add a few drops of tea tree oil along with it to help rid your rug or mat of any unwanted smells. Andrea Crowley, Better Homes & Gardens, 10 Aug. 2022 All-purpose cleaner: Mix one cup vinegar, two teaspoons of borax, four cups hot water, five drops liquid dish soap, 10 drops tea tree oil, and 10 drops your favorite essential oil (optional). Caitlin Sole, Better Homes & Gardens, 26 Aug. 2022 Some anti-dandruff products may also contain tea tree oil, which can help curb the overgrowth of yeast that causes dandruff in the first place. Sara Coughlin, SELF, 17 Aug. 2022 With argan oil, aloe vera juice and lemon tea tree oil, hair-wash reliably cleanses your strands and scalp without stripping your hair. Blake Newby, Essence, 17 Aug. 2022 For instance, tea tree oil, which is known for its antibacterial properties, per the Mayo Clinic, is often included, while other essential oils derived from bergamot or rosemary provide fragrance. Sarah Ban, SELF, 3 Aug. 2022 This will soothe your skin with arnica, tea tree oil, and aloe vera. Chris Hachey, BGR, 28 July 2022 Huang also recommends looking for other essential oils such as tea tree oil, cinnamon, orange and lemon. Jamie Kim, Good Housekeeping, 21 July 2022 See More
Emily Burns, ELLE, 17 Aug. 2022 Add a few drops of tea tree oil along with it to help rid your rug or mat of any unwanted smells. Andrea Crowley, Better Homes & Gardens, 10 Aug. 2022 All-purpose cleaner: Mix one cup vinegar, two teaspoons of borax, four cups hot water, five drops liquid dish soap, 10 drops tea tree oil, and 10 drops your favorite essential oil (optional). Caitlin Sole, Better Homes & Gardens, 26 Aug. 2022 Some anti-dandruff products may also contain tea tree oil, which can help curb the overgrowth of yeast that causes dandruff in the first place. Sara Coughlin, SELF, 17 Aug. 2022 With argan oil, aloe vera juice and lemon tea tree oil, hair-wash reliably cleanses your strands and scalp without stripping your hair. Blake Newby, Essence, 17 Aug. 2022 For instance, tea tree oil, which is known for its antibacterial properties, per the Mayo Clinic, is often included, while other essential oils derived from bergamot or rosemary provide fragrance. Sarah Ban, SELF, 3 Aug. 2022 This will soothe your skin with arnica, tea tree oil, and aloe vera. Chris Hachey, BGR, 28 July 2022 Huang also recommends looking for other essential oils such as tea tree oil, cinnamon, orange and lemon. Jamie Kim, Good Housekeeping, 21 July 2022 See More Word History
Etymology
from the use of an infusion of their leaves as a beverage
First Known Use
1790, in the meaning defined at sense 1