The Collaborative International Dictionary
Lion's tail \Li"on's tail`\ (l[imac]"[u^]nz t[=a]l`) n. (Bot.) A genus of labiate plants ( Leonurus); -- so called from a fancied resemblance of its flower spikes to the tuft of a lion's tail. Leonurus Cardiaca is the common motherwort.
Wiktionary
n. (taxlink Leonotis leonurus species noshow=1), a broadleaf evergreen shrub with medicinal and psychoactive properties.
Usage examples of "lion's tail".
Hornblower found himself drifting into the eternal debate as to whether America, when eventually she became weary of the indignities of neutrality, would turn her arms against England or France - she had actually been at war with France for a short time already, and it was much to her interest to help pull down the imperial despotism, but it was doubtful whether she would be able to resist the temptation to twist the British lion's tail.
Hornblower found himself drifting into the eternal debate as to whether America, when eventually she became weary of the indignities of neutrality, would turn her arms against England or France she had actually been at war with France for a short time already, and it was much to her interest to help pull down the imperial despotism, but it was doubtful whether she would be able to resist the temptation to twist the British lion's tail.
Lord Merseket bound the lion's tail around her waist and settled the tall red and white crown upon her brow.