The term 'GRAB' is a four-letter word that can be used as a verb or a noun. As a verb, it means to take hold of something quickly and firmly, often with the intention of taking it away. As a noun, it refers to an act of taking something quickly and firmly. It can also refer to a sudden, strong feeling of emotion. In the context of the crossword puzzle, the term 'GRAB' could refer to either the verb or the noun.