A highball is a family of mixed drinks that are composed of an alcoholic base spirit, and a larger proportion of a non-alcoholic mixer. A highball is typically served in large straight-sided glass like a highball glass, or a Collins glass, with ice.
There are many examples of highballs:
including Jack and Coke, Scotch and Soda, Seven and Seven, the Moscow Mule, the Gin and Tonic, Gin Fizz, Horse's Neck, Planters Punch, Singapore Sling, Long Island Iced Tea, Sea Breeze, Sex On The Beach, Zombie, After Sex, Buck's Fizz, Bull Shot, John Collins, Harvey Wallbanger, Screwdriver, Tequila Sunrise, Mai-Tai, Salty Dog, Cuba Libre, Snowball, Fuzzy Navel, and many others!!