"Macerated fruit" refers to fruit that has been soaked or marinated in liquid, usually sugar, to enhance its flavor and soften its texture. Full definition
You can macerate the fruits in alcohol before making the batter and you can do this step up to a day before. (joyofbaking.com)
There are also several methods of macerating the fruit, which will yield slightly different flavor profiles. (eggplantandolive.com)
So the best solution is either to add macerated fruit at the end of churning and eat the ice cream quickly, or serve the fruit as a sauce, which is my usual modus operandi. (davidlebovitz.com)