STEW, BREW and CREW immediately come to mind.
a 6 letter word ending with a w is borrow.
jigsaw The 6 letter word ending with w is hollow, sorrow, pillow, etc.
Blow, Flow, Crow, Snow, Slow, Stow.
widow
endow
widow
throw, below, shrew
willows
Waltz.
wheat
escrow
shallow shallow