A young eland or a small variety of eland antelope.
From eland plus the diminutive suffix -et (or -ette), following the pattern of French diminutives. This creates a smaller or youth-related version of the parent noun.
Diminutive suffixes like -et are disappearing from English—we just say 'young eland' now rather than creating new small-version words, which is why 'elanet' sounds charmingly old-fashioned!
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