A flat braided tape; especially a braid used to form designs on lace. Also: braided work, especially on lace. Frequently attributive, as "lacet braid", "lacet work", etc.
Early 19th century; earliest use found in Ladies' Monthly Museum. From French lacet flat braided tape, braid used to form designs on lace from lace + -et.
A hairpin bend in a road.
Mid 19th century. From French lacet hairpin bend, specific sense development of lacet lace.