The phrase "breast meat" refers to the meat that comes from the breast area of an animal, typically poultry like chicken or turkey. It is known for being lean and tender. Full definition
These meatballs are tender, moist and full of flavor but are made with low fat chicken breast meat instead of the usual beef or pork combination. (reciperebuild.com)
Since the dark thigh meat needs longer to cook than the white breast meat, it's helpful to chill the turkey breasts with ice packs before roasting. (greatist.com)
I'd also use chicken thighs instead of breast meat. (thegirlonbloor.com)