the end of something, usually something that has lasted for a long time.

As the final curtain fell on the longest match in tennis history, Agassi emerged victorious.

• do the unthinkable
• do the world of good
• do things by halves
• do time
• dot i's and cross the t's
• dot i's and cross t's
• dot i's and cross your t's
• dot the i's and cross the t's
• dot the i's and cross t's
• dot the i's and cross your t's
• dot your i's and cross the t's
• dot your i's and cross t's
• dot your i's and cross your t's
• double bind
• double-dip
• double-dipping
• double Dutch
• double entendre
• double over
• double-talk
• double up
• double up with
• double up with someone
• double whammy
• doubting Thomas