Strong's #5326: phantasma (pronounced fan'-tas-mah)
from 5324; (properly concrete) a (mere) show ("phantasm"), i.e. spectre:--spirit.
Thayer's Greek Lexicon:
́
phantasma
1) an appearance
2) an apparition, spectre
Part of Speech: noun neuter
Relation: from G5324
Citing in TDNT: 9:6, 1244
Usage:
This word is used 2 times:
Matthew 14:26: "they were troubled, saying, It is a spirit; and they cried out for fear."
Mark 6:49: "sea, they supposed it had been a spirit, and cried out:"