The term CROSSWORD CLUE ABBR. is composed of five abbreviations: VAR (3 letters), ACR (3 letters), PUN (3 letters), SYNONYM (7 letters), and ACROSS (6 letters). These abbreviations refer to the different types of clues used in crossword puzzles. VAR stands for 'VARIABLE, ' which is a clue that can have multiple answers. ACR stands for 'acronym, ' which is a clue that requires the solver to spell out a word or phrase using the letters of another word or phrase. PUN stands for 'PUN, ' which is a clue that uses a play on words. SYNONYM stands for 'synonym, ' which is a clue that requires the solver to find a word with a similar meaning to the given word. Finally, ACROSS stands for 'ACROSS, ' which is a clue that requires the solver to find a word that is related to the given word in some way.