Eggs can be consumed during Lent (I presume you mean the Catholic tradition of fasting, particularly "no meat", on Fridays during Lent). It's not considered meat.
Among Eastern Christians (Catholics / Orthodox) eggs are traditionally abstained from during all or parts of Lent, it depends on the particular church.
Interesting. That's not the case with US-based Catholics, or other Catholics I've met from Western or Southern Europe and the Americas. But while I know a few Eastern Orthodox folks I haven't really compared the specifics of the traditions.
