The Collaborative International Dictionary
Thoroughwax
Thoroughwax \Thor"ough*wax`\, n. (Bot.)
An umbelliferous plant ( Bupleurum rotundifolium) with perfoliate leaves.
Thoroughwort.
Wiktionary
thoroughwax
n. 1 An umbelliferous plant ((taxlink Bupleurum rotundifolium species)) with perfoliate leaves. 2 The thoroughwort.