Auxiliary Track is a term used in railway engineering. It refers to a track that branches off from the main line and is used for purposes such as storing rolling stock, allowing trains to pass each other, or providing access to sidings and industrial sites. The two crossword solutions for this term are 'SPUR' (4 letters) and 'Lemma' (5 letters). A SPUR is a short section of track that branches off from the main line and is used for a specific purpose. A lemma is a technical term used in railway engineering to refer to a track that branches off from the main line and is used for purposes such as storing rolling stock, allowing trains to pass each other, or providing access to sidings and industrial sites.