sennight
Synonym of week in its various senses, a period of seven consecutive days and nightsSynonym of week in its various senses, a period of seven consecutive days and nights.
Meaning
1 senses(archaic, obsolete, poetic)Synonym of week in its various senses, a period of seven consecutive days and nights.
Origin
From Middle English senight, senyght, sinight (“sevennight, a week”) [and other forms], aFrom Middle English senight, senyght, sinight (“sevennight, a week”) [and other forms], a shortened form of seven-night, sevenight, sevenyght [and other forms], from Late Old English seofeniht (compare seofonnihte (“seven days old; seven days long”, adjective)), from seofon (“seven”) (ultimately from Proto-Indo-European *septḿ̥ (“seven”)) + niht (“night; day (when computing spans of time)”) (ultimately from Proto-Indo-European *nókʷts (“night”)). Doublet of sevennight.
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