1.  lacy(s = adj.all) lacelike - made of or resembling lace; "a lacy gown"; "a lacy leaf"
Derived form noun lace₂

2.  lacy(s = adj.all) netlike, netted, webbed, webby, weblike - having open interstices or resembling a web;

lacy, adj. (lacier, laciest) of or resembling lace fabric.

Derivative:
lacily adv. laciness n.