The meaning of Fleece in the Bible
(From Easton's Bible Dictionary)

the wool of a sheep, whether shorn off or still attached to the skin (Deuteronomy 18:4; Job 31:20). The miracle of Gideon's fleece (Judges 6:37-40) consisted in the dew having fallen at one time on the fleece without any on the floor, and at another time in the fleece remaining dry while the ground was wet with dew.

See more on the meaning of Fleece in the Bible:
Fleece {International Standard Bible Encyclopedia}

DISCLAIMER: Church of the Great God (CGG) provides these resources to aid the individual in studying the Bible. However, it is up to the individual to "prove all things, and hold fast to that which is good" (I Thessalonians 5:21). The content of these resources does not necessarily reflect the views of CGG. They are provided for information purposes only.