The term 'avails oneself of' is a phrase that means to make use of something. It can be broken down into three crossword solutions: USES (4 letters), TURNSTO (7 letters), and UTILIZES (8 letters). The word 'USES' implies taking advantage of something, while 'turnsto' suggests turning to something for help or assistance. Finally, 'UTILIZES' implies making the most of something. All three words together suggest that one is taking advantage of a resource in order to achieve a desired outcome.