The most common and most likely answer to this crossword clue is the 5 letter word RAILS
I've seen this crossword clue in The Daily Telegraph
R
A
I
L
S
More clues leading to the result RAILS
- Hawk-headed god exists to save lake birds
- Rotten liar’s rants
- They fly or take a train
- Track birds
- Protests suffer in the case of Royals
- Suffers after runs and horizontal bars
- Makes a protest, there being barriers
- Tracks of birds
- Scoffs éclairs, putting away first couple excitedly
- Loveless sailor staggers round bars
Buddy explains!

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 RAILS mean?
RAILS noun- A horizontal bar extending between supports and used for support or as a barrier; a railing.
- The metal bar that makes the track for a railroad.
- A railroad; a railway, as a means of transportation.
- A horizontal piece of wood that serves to separate sections of a door or window.
- One of the lengthwise edges of a surfboard.
- A vertical section on one side of a web page.
- A large line (portion or serving of a powdery illegal drug).
- To travel by railway.
- To enclose with rails or a railing.
- To range in a line.
- To criticize severely.
- Any of several birds in the family Rallidae.
- To complain violently (against, about).
- An item of clothing; a cloak or other garment; a dress.
- Specifically, a woman's headscarf or neckerchief.
- (of a liquid) To gush, flow.