Strong’s Greek
G1471 — egkuos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἔγκυος
egkuos — pronounced eng'-koo-os
from 1722 and the base of 2949; swelling inside, i.e. pregnant:--great with child. see GREEK for 1722 see GREEK for 2949
1 occurrence in the KJV.
Luke 2:5
To be taxed with Mary his espoused wife, being great with child.