Six-pack has more than one meaning:

• "Six-pack" refers to a set of six canned or bottled drinks sold together: aluminum cans are held together by a yoke, and bottles are stored in cardboard carriers with three on either side of a handle in the middle.
• A "six-pack" is a colloquial term for a well-defined set of abdominal muscles, so named because of the particular prominence of 3 pairs of the muscles and alluding to the above definition of a common grouping of drinks.
• Six Pack (EP), an Extended Play Record by Black Flag.
• Six Pack (comics), a group of Marvel Comics fictional characters.
• Six Pack (film), the title of the 1982 movie, starring Kenny Rogers and Diane Lane.