The most common and most likely answer to this crossword clue is the 6 letter word BOTTLE
I've seen this crossword clue in The Times
B
O
T
T
L
E
More clues leading to the result BOTTLE
- Nebuchadnezzar, for example, daring
- Source of stout courage?
- Aussie empties dealer’s British depot regularly: too much left therein
- Propane perhaps but not a nerve agent, however
- What may contain beer — Courage, perhaps
- Like some kids left to be treated by daughter
- Courage beer found in this?
- Spirit one's necked
- Bravery, key perhaps, in possession of drinker?
- Item stored in cellar, dry inside trunk
Buddy explains!

The straight part
We know that "Nebuchadnezzar, for example/daring" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case nebuchadnezzar, for example/daring = bottle.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 BOTTLE mean?
BOTTLE noun- A container, typically made of glass or plastic and having a tapered neck, used primarily for holding liquids.
- The contents of such a container.
- A container with a rubber nipple used for giving liquids to infants, a baby bottle.
- Nerve, courage.
- (of a person with a particular hair color) A container of hair dye, hence with one’s hair color produced by dyeing.
- A bundle, especially of hay; something tied in a bundle.
- Intoxicating liquor; alcohol.
- The tendency of pages printed several on a sheet to rotate slightly when the sheet is folded two or more times.
- To seal (a liquid) into a bottle for later consumption. Also fig.
- To feed (an infant) baby formula.
- To refrain from doing (something) at the last moment because of a sudden loss of courage.
- To throw away a leading position.
- To strike (someone) with a bottle.
- To pelt (a musical act on stage, etc.) with bottles as a sign of disapproval.
- A dwelling; habitation.
- A building; house.