The term 'nitty-gritty' refers to the most essential or fundamental aspects of something. The crossword solutions for this term include 'KERNEL' (6 letters), which is the central or most important part of something; 'BRASS' (5 letters), which is a yellow alloy of copper and zinc; 'CORE' (4 letters), which is the central or innermost part of something; 'CRUX' (4 letters), which is the most important or essential part of something; 'GIST' (4 letters), which is the main point or ESSENCE of something; 'BASICS' (6 letters), which are the fundamental principles of something; 'NUB' (3 letters), which is the essential or most important part of something; 'ESSENCE' (7 letters), which is the intrinsic nature or indispensable quality of something; 'MEAT' (4 letters), which is the most important or essential part of something; 'PITH' (4 letters), which is the essential or most important part of something; 'nutsandbolts' (12 letters), which are the basic elements of something; 'meatandpotatoes' (15 letters), which are the essential elements of something; and 'peanutsandbolts' (15 letters), which are the small but essential details of something.