a chain of undulating hills

acceleration of free falling body beggine central arteriole coproantibody dual currency credit card gate keeper infinitely long line international space year (isy) kilostreams massed practice narrow base postconvalescence safety protective coverall safety radiotelegraphy certificate scrape-trencher smooth-wound armature swiveling drill machine varicotomies worm type propeller yadda yadda yadda