The List
There are 62 5 letter words with W as the last letter. The highest scoring is SQUAW at 17 points in Scrabble. 1 carry three or more vowels, which makes them useful for dumping a vowel-clogged rack.
ABLOWADVEWAGLOWALLOWARROWASKEWBEDEWBELOWBESAWBYLAWCAHOWELBOWEMBOWEMMEWENDEWENDOWENMEWENSEWEWHOWIMMEWINDEWINDOWKOTOWMACAWMIAOWNAVEWNOHOWOXBOWPAPAWPAWAWPILAWPILOWPSHAWRENEWRESAWRESEWRESOWSCRAWSCREWSCROWSEROWSHREWSHROWSINEWSPREWSQUAWSTRAWSTREWSTROWSYBOWTHEOWTHRAWTHREWTHROWUNLAWUNMEWUNSEWUPBOWVINEWVROUWWIDOWYAKOW