Related Clues:

• Striped billiard ball
• Quartet quorum
• Tea time, traditionally
• Tiger iron
• Muses number
• "Fab" total
• Opening time
• WXYZ button
• Gettysburg Address starter
• Mudville team
• Bridge-table quorum
• WXY, on a phone
• Three's opposite on a clock face
• Workday start for many
• It's a square