seven

Etymology

From Middle English seven, from Old English seofon (“seven”), from Proto-West Germanic *sebun (“seven”), from Proto-Germanic *sebun (“seven”), from Proto-Indo-European *septḿ̥ (“seven”). Cognate with Scots seiven (“seven”), West Frisian sân (“seven”), Saterland Frisian soogen (“seven”), Low German söven (“seven”), Dutch zeven (“seven”), German sieben (“seven”), Danish syv (“seven”), Norwegian sju (“seven”), Icelandic sjö (“seven”), Latin septem (“seven”), Ancient Greek ἑπτά (heptá, “seven”), Russian семь (semʹ), Sanskrit सप्तन् (saptán).

num

1. A numerical value equal to 7; the number following six and preceding eight. This many dots: (•••••••). Describing a group or set with seven elements.
   The cabbalism of the number seven is emphasized, for in hell seven judges at each of seven gates take one of these divine laws away from her. 1981, William Irwin Thompson, The Time Falling Bodies Take to Light: Mythology, Sexuality and the Origins of Culture, London: Rider/Hutchinson & Co., page 175

noun

1. The digit/figure 7 or an occurrence thereof.
   He wrote three sevens on the paper.
2. (countable, card games) A card bearing seven pips.