Alternative form of Isle

(aviation) Initialism of instrument landing system. / Initialism of integrated logistic support. / Initialism of integrated library system.

(non-productive) tending to, or capable of

Abbreviation of percentile.

plural of IL

(historical) The title which Italian dictator Benito Mussolini assumed during his rule (1922—1945).

(bibliography) Abbreviation of illustrations in color.

An island in Strasbourg, Bas-Rhin department, Alsace, Grand Est, France, on the Ill River / Alternative form of Grande-Ile.

An island in Monteregie, Quebec, Canada, on the Saint Lawrence River / A suburb of Valleyfield, Monteregie, Quebec, Canada, on the eponymous island / Alternative form of Grande Ile

Proper; in keeping with etiquette or social standards.