This is the verse translation, not a definition of the individual word.
through which Allah guides those who seek His pleasure to the ways of peace[1], and brings them out of the depths of darkness to the light by His Will, and guides them to a straight path.
Source
[1] i.e., security and well-being in this life; safety from Hellfire and admission into Paradise, the Home of peace (Dār al-Salām) See 10:25.