A pledge or hostage
Gicelle is a rare variant of the French name Giselle. It is derived from the Germanic word 'gisil', which historically referred to a pledge or a person held as a guarantee during treaties. The name gained widespread popularity through the 19th-century romantic ballet 'Giselle'.
Less common today
Gicelle isn't in the latest US Top 1000. It last peaked at #9,458 in 1999.
US births per 5-year period, 1990βpresent (SSA data).