My grandmother used to work out and my Grandpa paid locker rent.
When Grandma worked out in the 1920s and 1930s, it meant she worked for a neighboring family doing household chores, preparing meals, and other related tasks. When my Grandpa Neill paid locker rent in the 1940s it was for rent at a frozen food cooperative where he had freezer space where he and Grandma could store butchered meat and other food items they wanted to preserve by freezing.
Readers of a certain age will already know what these terms mean. Others may not. Any document or record can easily contain a term or phrase whose meaning has changed over time. That chance increases as the genealogy research extends further and further back in time.
Is there a chance that phrase didn’t mean then what it does now?