The most common and most likely answer to this crossword clue is the 5 letter word SIGNS
I've seen this crossword clue in The Daily Telegraph
S
I
G
N
S
More clues leading to the result SIGNS
- Indications of gang leader stopping offences?
- Traces of gin cooked in hollowed-out sprouts
- Offences involving grand gestures
- Houses of the stars?
- Endorses poor guess in dropping EU
- Indications of plus and minus, for example
- Could be in the stars‘ autographs
- Some trigonometric quantities reportedly fetch marks
- Indications that there's good among wrongdoings
- Endorses more than one function, we hear
Buddy explains!

The straight part
We know that "gestures" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case gestures = signs.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 SIGNS mean?
SIGNS noun- (sometimes also used uncountably) A visible indication.
- Physical evidence left by an animal.
- A clearly visible object, generally flat, bearing a short message in words or pictures.
- A wonder; miracle; prodigy.
- An astrological sign.
- Positive or negative polarity, as denoted by the + or - sign.
- A specific gesture or motion used to communicate by those with speaking or hearing difficulties; now specifically, a linguistic unit in sign language equivalent to word in spoken languages.
- Sign language in general.
- An omen.
- A property of the body that indicates a disease and, unlike a symptom, is unlikely to be noticed by the patient.
- A military emblem carried on a banner or standard.
- To make a mark
- To make the sign of the cross
- To indicate