1. [n]  one of the four satellites of Jupiter that were discovered by Galileo
2. [n]  a resident of Galilee (an epithet of Jesus Christ)
3. [adj]  of or relating to Galilee or its inhabitants
4. [adj]  of or relating to Galileo or his works

1. \Gal`i*le"an\, a.
   Of or pertaining to Galileo; as, the Galilean telescope. See
   {Telescope}.
   

2. \Gal`i*le"an\, a. [L. Galilaeus, fr. Galilaea Galilee,
   Gr. ?: cf. F. galil['e]en.]
   Of or relating to Galilee.
   

3. \Gal`i*le"an\, n.
   1. A native or inhabitant of Galilee, the northern province
      of Palestine under the Romans.
   2. (Jewish Hist.) One of the party among the Jews, who
      opposed the payment of tribute to the Romans; -- called
      also {Gaulonite}.
   3. A Christian in general; -- used as a term of reproach by
      Mohammedans and Pagans. --Byron.
   

an inhabitant or native of Galilee. This word was used as a name of contempt as applied to our Lord's disciples (Luke 22:59; Acts 2:7). All the apostles, with the exception of Judas Iscariot (Acts 1:11), were Galileans. Peter was detected by his Galilean accent (Matt. 26:69; Mark 14:70).

This was also one of the names of reproach given to the early Christians. Julian the Apostate, as he is called, not only used the epithet himself when referring to Christ and his apostles, but he made it a law that no one should ever call the Christians by any other name.