rank
Strong in growth; growing with vigour or rapidity, hence, coarse or gross.
Other meanings
Strong to the senses; offensive; noisome.
Headstrong; difficult to control.
Word history
From Old English "ranc".
Where this comes from
This definition is adapted from “rank” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.