An archaic or dialectal past tense of 'bid,' meaning to command or offer a price.
From Old English 'bead' meaning to command or pray, related to 'bid.' In Middle English, 'boud' served as the past tense before being replaced by 'bid' in modern usage.
English's past tenses used to be wonderfully irregular—'boud' for bid, 'spake' for speak—and you can trace how languages naturally 'regularize' themselves by looking at which archaic forms survived and which disappeared!
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