One more than six; the sum of three and four: a cardinal numeral.(b ) The constellation Ursa Major.The Pleiades.n. The number greater by one than six; a group of things amounting to this number.n. The symbol representing this number, as 7, or VII, or vii.n. plural In Eng. hymnology, a species of trochaic meter having seven syllables to the line, and properly four lines to the stanza. Sevens double (7s, D.) has eight lines, and other varieties are marked by the number of lines, as 7s, 6l, or 7s, 3l.n. A playing-card with seven spots or pips on it.n. To set in confusion.