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}.
[1913 Webster]