1. being number 60 in a sequence; coming after fifty-nine others

1. the sixtieth item in a series
2. one of sixty equal parts of something

Examples

• She celebrated her sixtieth birthday last month.
• The sixtieth anniversary of the school was marked with a special ceremony.
• He finished in sixtieth place in the marathon.
• The sixtieth student to register received a free textbook.
• Each person gets one sixtieth of the total profit.
• The sixtieth of a minute is called a second.
• This is the sixtieth time I’ve told you to clean your room.