Correct spelling for the English word "Seiks" is [sˈe͡ɪks], [sˈeɪks], [s_ˈeɪ_k_s] (IPA phonetic alphabet).
A warlike people of Hindostan, inhabiting the Punjaub, subdued by the British arms, and now forming part of the British Indian Empire.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "Sikhs" refers to the followers of Sikhism, a monotheistic religion originating in the Punjab region of India. The term "Sikhs" is derived from the Punjabi word "sikh", which means "disciple" or "student". It comes from the Sanskrit word "śiṣya", which has the same meaning. The founder of Sikhism, Guru Nanak Dev Ji, referred to his followers as "Sikhs", emphasizing their role as disciples on a spiritual path. Over time, the term "Sikhs" has become widely recognized to represent the community of followers of Sikhism worldwide.