-hou is a suffix (part added to the end of a word) found in many Channel Islands and Norman names. It is the Norman language version of the Old Norse holmr, meaning a small island, and often found anglicised elsewhere as "holm". It can still be found in modern Scandinavian languages, e.g. Stockholm.
The Norman hommet/houmet also comes from this suffix.
In Parisian French, the equivalent is îlot, which is the same as the English "islet".
Bailiwick of Guernsey
Off Guernsey
Lihou
Les Houmets including - Houmet Benest/Benet, Houmet Paradis & Houmet Hommetol (Omptolle). Off Alderney Burhou Off Herm Jethou Le Plat Houmet Off Sark Brecqhou
Bailiwick of Jersey
Les Écréhous
Le Plat Hommeit
Le Hommet du Ouaisné
Les Hommets
La Rocco (from rocque-hou) Icho (from ic-hou)