The most common and most likely answer to this crossword clue is the 5 letter word GECKO
I've seen this crossword clue in The Times
G
E
C
K
O
More clues leading to the result GECKO
- Lizard originally given every care keepers offer
- Lizard, say, returning? Fine about retreating
- Wall Street character good on City floor
- Lizard tails in steaming casserole, eccentric cook blotto!
- Travel round city, and finally ask for wall sticker
- One climbing the walls is up, not bad and constant, say
- Lizard finally feeling all right about crossing City area
- Go round city and finally ask for wall sticker?
- To start with, grey parrot caught small lizard
- Scales on this being electronic,0kg returned to screen
Buddy explains!

The straight part
We know that "Wall Street character" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case wall street character = gecko.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 GECKO mean?
GECKO noun- Any lizard of the family Gekkonidae. They are small, carnivorous, mostly nocturnal animals with large eyes and adhesive toes enabling them to climb on vertical and upside-down surfaces.
- To move in the manner of a gecko; to attach to a vertical or upside-down surface.