A small bush or a young/small bushy plant.
From 'bush' + '-let' (diminutive suffix meaning small). The '-let' suffix comes from Old French and Latin, and is less common in modern English than '-ling' or '-ette,' but persists in specialized or archaic terms.
Diminutive suffixes like '-let' are fading from everyday English—we say 'small bush' instead of 'bushlet'—but the suffix survives in poetic language and specialized contexts, showing how word-formation patterns can become archaic even as they remain grammatically valid.
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