The most common and most likely answer to this crossword clue is the 7 letter word EGGHEAD
I've seen this crossword clue in The Daily Telegraph
E
G
G
H
E
A
D
More clues leading to the result EGGHEAD
- As leader of government had written about English intellectual
- Knife cut back across the male's brain
- E for expert?
- For example, leader of group and top boffin
- Intellectual whose brain might be scrambled?
- Brainy chap giving you an E?
- . Genius, good man inspired by old oath
- Intellect Wren potentially manifested round house’s east wing
- One likely to have some cracking thoughts?
- Brainy type of English supervisor ferrying goods
Buddy explains!
The straight part
We know that "Einstein?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case einstein? = egghead.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does EGGHEAD mean?
EGGHEAD noun- A bald person, especially a man.
- A bald head.
- A coldly out of personal touch intellectual.