There are 56 words that start with 'blow'.
Note: These 56 words that start with 'blow' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with blowb, blows, blowt, blowi, blowz, blowf, blowh, blowo, blowe, blowd, blowg, blowj, blowp, blowu, blown, blowy.