A small bob or bobbed object; a diminutive form suggesting something short that has been made even smaller.
From 'bob' + '-let' suffix; the '-let' diminutive suffix (as in 'leaflet' and 'booklet') creates this term for a very small bobbed thing.
English is wonderfully flexible—add '-let' to almost anything and you get a smaller version, which is why we can call a tiny winding path a 'streamlet' and a tiny bobbed thing a 'boblet.'
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