Based on the provided information, the full form of "SS" in the context of a DLS (which typically stands for Duckworth-Lewis-Stern method in cricket) is not explicitly defined. However, the reference details the role of a second striker in football, which is unrelated to DLS. Therefore, with the information available, the term "SS" in relation to DLS is not applicable.
The reference provided focuses on the role of a second striker in football, describing it as:
- A combination of a playmaker and a centre forward.
- A player who links midfield and attack.
- Someone who often occupies the positions of an attacking midfielder or a winger.
- Not primarily responsible for goalscoring.
This information is completely unrelated to DLS, which is a statistical system used to calculate target scores in limited-overs cricket matches that are interrupted by weather or other factors.
Therefore, the question requires information outside the provided context.
Since the provided reference doesn't contain information on the full form of "SS" in DLS, we must conclude that the information required to provide an answer is not contained in the references provided.