a late time of life

• old age is not for sissies
• he's showing his years
• age hasn't slowed him down at all
• a beard white with eld
• on the brink of geezerhood

• old_age
• years
• age
• eld
• geezerhood

a prolonged period of time

• we've known each other for ages
• I haven't been there for years and years

• long_time
• age
• years

the time during which someone's life continues

• the monarch's last days
• in his final years

• days
• years

a period of time containing 365 (or 366) days

• she is 4 years old
• in the year 1920

• year
• twelvemonth
• yr

a period of time occupying a regular part of a calendar year that is used for some particular activity

• a school year

• year

the period of time that it takes for a planet (as, e.g., Earth or Mars) to make a complete revolution around the sun

• a Martian year takes 687 of our days

• year

a body of students who graduate together

• the class of '97
• she was in my year at Hoehandle High

• class
• year