Jumps or bounds through the air; makes large sudden movements or changes; or plural noun for instances of jumping.
From Old English 'hleapan,' from Proto-Germanic 'hlaufaz.' Cognates exist in German 'laufen' (to run). The word originally meant running and shifted to emphasize the jumping aspect over time.
A leap year happens every 4 years because the Earth takes 365.25 days to orbit the sun—without the extra day, seasonal holidays would slowly drift backward, eventually having Christmas in summer.
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