Anything to do with the function or appearance of a woman's breasts. A play on the common phrase "memory lane," it is often used in constructions like "walk down mammary lane" or "a trip down mammary lane." I was fully committed to taking a walk down mammary lane when my son was born, but there were so many complications trying to breastfeed that my doctor said giving him a bottle was probably the better option. It's going to be a trip down mammory lane in next month's issue as we look at the top-selling brands of bras currently on the market.