Seeker \Seek"er\, n.

1. One who seeks; that which is used in seeking or searching.

2. (Eccl.) One of a small heterogeneous sect of the 17th century, in Great Britain, who professed to be seeking the true church, ministry, and sacraments.

A skeptic [is] ever seeking and never finds, like our new upstart sect of Seekers. --Bullokar.

Source: Webster's Revised Unabridged Dictionary (1913)