One who hastles; a person who wraps hay or straw into bundles, or someone who moves hurriedly.
From 'hastle' (a variant of 'hassle,' to wrap or bind hay) + '-er' (one who does). This occupational term reflects agricultural and textile work terminology.
Hastler represents a lost trade—hay bundling was such specific work that workers needed a precise name, but mechanization eliminated the job, and the word retired with it into dictionaries.
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