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Webster 1913 Edition

Seven-up

Sev′en-upˊ

,

Noun.

The game of cards called also

all fours

, and

old sledge

.

[U. S.]

Definition 2024

seven-up

seven-up

English

Noun

seven-up ‎(uncountable)

A children's game in which players with their eyes shut try to guess which of a group of seven people pressed down their thumbs.
(Discuss⁽⁺⁾ this sense) (card games) A card game similar to all fours.