The term 'Glasgow Boy' refers to a group of painters and artists from Glasgow, Scotland, who were active in the late 19th and early 20th centuries. The group was known for its distinctive style of painting, which combined elements of Impressionism and Post-Impressionism. The group's most famous member was the painter James Guthrie. The crossword solution for the term 'Glasgow Boy' is 'LAD', which is an abbreviation for 'Local Artist Development'. This acronym was used to refer to the group of artists from Glasgow who developed their own unique style of painting.