The term 'martini garnish' refers to the various ingredients used to decorate a martini. The crossword solutions for this term are OLIVE (5 letters), RIND (4 letters), ripeolive (9 letters), and pimentoolive (12 letters). OLIVE is the most common garnish for a martini, and can be either green or black. RIND is the outer layer of a citrus fruit, such as a lemon or lime, which can also be used as a garnish. Ripeolive is an OLIVE that has been allowed to ripen, and is usually black in color. Pimentoolive is an OLIVE that has been stuffed with a pimento, which is a type of pepper. All of these ingredients can be used to add flavor and visual appeal to a martini.