The Glasgow Group was a collective of Scottish artists, writers, and intellectuals who were active in the 1920s and 1930s. The group was also known as the 'CLAN', which is a four-letter word that is one of the solutions to the crossword. The group was founded by the poet Hugh MacDiarmid and included other prominent figures such as Edwin Muir, J.D. Fergusson, and Robert Colquhoun. They were known for their modernist and avant-garde works, which sought to challenge traditional artistic conventions.