The phrase "crochet detail" refers to a decorative touch or design element that has been created using crochet techniques. It means there is a small, intricate pattern or embellishment made by looping yarn with a crochet hook. Full definition
It's such a gorgeous elegant dress with the beautiful crochet detailing on it. (touchofgs.com)
I absolutely fell in love with crochet details (especially on the back) and the way this dress swings. (beyondbasicblog.com)
I do not feel a necklace is needed with this lace dress because of the high neck line and lace / crochet detailing at the top of this dress. (petitestylescript.com)