"a rehearsal," especially a hasty one, 1923, from the verbal phrase, from run (v.) + through (adv.).
runny
Runnymede
runoff
run-of-the-mill
runt
run-through
run-up
runway
rupee
Rupert
rupture
)window.location='https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=byronic106@yahoo.com&lc=US&item_name=Donation+to +Help+Keep+Etymonline+Free+and+Open&no_note=0&cn=&curency_code=USD&bn=PP-DonationsBF:btn_donateCC_LG.gif:NonHosted'){kind=link}