The most common and most likely answer to this crossword clue is the 5 letter word GLASS
I've seen this crossword clue in The Times
G
L
A
S
S
More clues leading to the result GLASS
- Girl’s after good mirror
- Good girl, one that can hold a drink
- Cannabis with change of direction makes crystal, perhaps
- Maybe helium’s left inside balloon?
- Good girl? Crystal could be one!
- Close to confiscating girl’s flute?
- Good girl, as seen in mirror
- Girl is after good barometer
- Perhaps schooner master deserts attractive ship
- Mirror informant changes sides
Buddy explains!

The straight part
We know that "one that can hold a drink" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case one that can hold a drink = glass.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 GLASS mean?
GLASS verb- To apply fibreglass to.
- An amorphous solid, often transparent substance made by melting sand with a mixture of soda, potash and lime.
- A vessel from which one drinks, especially one made of glass, plastic, or similar translucent or semi-translucent material.
- (metonymically) The quantity of liquid contained in such a vessel.
- Glassware.
- A mirror.
- A magnifying glass or telescope.
- A barrier made of solid, transparent material.
- A barometer.
- (in names of species) Transparent or translucent.
- An hourglass.
- Lenses, considered collectively.
- To fit with glass; to glaze.
- To enclose in glass.
- To strike (someone), particularly in the face, with a drinking glass with the intent of causing injury.
- To bombard an area with such intensity (nuclear bomb, fusion bomb, etc) as to melt the landscape into glass.
- To view through an optical instrument such as binoculars.
- To smooth or polish (leather, etc.), by rubbing it with a glass burnisher.
- To reflect; to mirror.
- To make glassy.
- To become glassy.