\\\"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\\\"
a time of life (usually defined in years) at which some particular qualification or power arises;
\\\"she was now of school age\\\"
\\\"tall for his eld\\\"