There are 56 words that end with 'lock'.
Note: These 56 words that end with 'lock' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with block, rlock, dlock, elock, llock, hlock, tlock, flock, mlock, nlock, clock, glock, ilock, klock, plock, wlock, ylock.