A group of seven things.
A period of seven years.
The seven notes of the diatonic scale.
Of seventh rank or order.
Consisting of or containing seven.
Lasting seven years; continuing seven years.
The digit/figure 7 or an occurrence thereof.
A card bearing seven pips.
A numerical value equal to 7; the number following six and preceding eight. This many dots: (•••••••). Describing a group or set with seven elements.