The term 'crab claw' refers to the appendages of a crab, which are used for locomotion and feeding. The crossword solutions for this term are CHELA (5 letters), PINCER (6 letters), and PAW (3 letters). CHELA is a term used to describe the first pair of walking legs on a crab, which are usually larger than the other legs and have claws at the end. PINCER is a term used to describe the second pair of walking legs on a crab, which are usually smaller than the first pair and have pincers at the end. Finally, PAW is a term used to describe the third pair of walking legs on a crab, which are usually the smallest and have no claws or pincers.