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.
Definition of cowl. 1a : a hood or long hooded cloak especially of a monkb : a draped neckline on a woman's garment. 2a : a chimney covering designed to improve the draftb : the top portion of the front part of an automobile body forward of the two front doors to which are attached the windshield and instrument boardc : cowling.