A small dike or minor embankment, often a tributary or subsidiary water defense structure.
From 'dike' + the diminutive suffix '-let', used in English to indicate something smaller or lesser. This formation follows the productive pattern of words like 'booklet' and 'streamlet'.
The word 'dikelet' shows how Dutch water management was so sophisticated they literally had specialized vocabulary for different sizes of embankments—because in a country below sea level, even small dikes matter enormously!
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