Wiktionary
adv. in pairs, especially one of each sex
Wikipedia
Two By Two is a Broadway musical with a book by Peter Stone, lyrics by Martin Charnin, and music by Richard Rodgers.
Based on Clifford Odets's play The Flowering Peach, it tells the story of Noah's preparations for the Great Flood and its aftermath.
Directed by Joe Layton, the production opened on November 10, 1970 at the Imperial Theatre, where it ran for ten months. The opening night cast included Danny Kaye, Marilyn Cooper, Joan Copeland, Harry Goz, Madeline Kahn, Michael Karm, Tricia O'Neil, and Walter Willison.
Two by Two, two by two, 2×2 or 2by2 may refer to:
Two by Two (sometimes written as 2x2 or 2By2) was Blue Zoo's 1983 album and featured their October 1982 UK hit " Cry Boy Cry".
The album was produced by Talk Talk's Tim Friese-Greene.
Usage examples of "two by two".
A few deep breaths were taken, and eyes were too steely or too shocked as yet for tears as, two by two, they turned away to stare down at the polished oak of the table.