Hole-card meaning

A card in poker that is dealt face-down and that the holder is not obliged to reveal before the showdown.
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Something held in reserve until it can be used advantageously.
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A card dealt face down.
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A hidden advantage or undisclosed resource.
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(poker, chiefly in the plural) A playing card, dealt face down, that the holder need not reveal until the showdown.
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(by extension) Something held in reserve, or concealed, until it is useful.
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