Boyd’s Bible Dictionary:
“Newly planted
A recent convert (1 Tim. 3:6).
Concise Bible Dictionary:
The word νεόφυτος is literally “newly planted,” and is applied to those who had been but recently converted. They were not to be appointed as bishops or overseers, lest, being lifted up with pride, they should fall into the condemnation of the devil (1 Tim. 3:6).
Strong’s Dictionary of Greek Words:
Transliteration:
neophutos
Meaning:
from 3501 and a derivative of 5453; newly planted, i.e. (figuratively) a young convert ("neophyte")