The short simple answer is you do not need a cdl for a vehicle under 26001 lbs, air brakes or not. If you haul Hazardous material, you need a class c with a hazmat endorsement and you must take your road test in a truck with air brakes and pass the general knowledge test for cdl.
Definition of grovel for English Language Learners. : 1  to kneel, lie, or crawl on the ground. : 2  to treat someone with too much respect or fear in a way that shows weakness in order to be forgiven or to gain approval or favor.
Word Origin & History. grovel 1593, Shakespearian back-formation of M.E. groveling, regarded as a prp. but really an adv., from O.N. grufe prone + obsolete adverbial suffix -ling (which survives also as the -long in headlong, sidelong); first element from O.N. a grufu on proneness.. Perhaps related to creep.