any of several plants belonging to the genus Alcea (or Althaea ), of the mallow family, native to Eurasia, especially A. rosea, a tall plant having a long cluster of showy, variously colored flowers.
Origin: 1225–75;Middle Englishholihoc, equivalent to holiholy + hoc mallow, Old Englishhocc
Also called (US): rose mallow a tall widely cultivated malvaceous plant, Althaea rosea, with stout hairy stems and spikes of white, yellow, red, or purple flowers
[C16: from holy + hock, from Old English hoc mallow]
c.1265, holihoc, from holi "holy" + hokke "mallow," from O.E. hocc, of unknown origin. The first element is probably of hagiological origin; another early name for the plant was caulis Sancti Cuthberti "St. Cuthbert's cole."