Strong's #1503: eiko (pronounced i'-ko)
 apparently a primary verb (perhaps akin to 1502 through the idea of faintness as a copy); to resemble:--be like.
Thayer's Greek Lexicon:
 ̓́ 
 
  eikō 
 
 1) to be like
 
  Part of Speech: verb
Relation: apparently a root word [perhaps akin to G1502 through the idea of faintness as a copy]
 
Usage:
This word is used 2 times:
James 1:6: "wavering. For he that wavereth  is like a wave of the sea driven with the wind and"
James 1:23: "not a doer, he  is like unto a man beholding his natural"