The most common and most likely answer to this crossword clue is the 9 letter word SIDELIGHT
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More clues leading to the result SIDELIGHT
- I had energy put into slim lamp
- One type of lamp is put back by entrance
- Extra information from border not amounting to much
- Minor illumination is recalled with pleasure
- Incidental information in window by door
- Bit of incidental information is turned over with pleasure
- View taking in shop window
- One, for example, may provide illumination
- It led lunatic to the window
- Port or starboard lamp is put back with pleasure
Buddy explains!

The straight part
We know that "lamp" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case lamp = sidelight.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 SIDELIGHT mean?
SIDELIGHT noun- A light found at the side of something; especially of a vehicle.
- A window found at one or both sides of a door.