The most common and most likely answer to this crossword clue is the 3 letter word RAG
I've seen this crossword clue in The Daily Telegraph
R
A
G
More clues leading to the result RAG
Buddy explains!

The straight part
We know that "Tabloid" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case tabloid = rag.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 RAG mean?
RAG noun- (in the plural) Tattered clothes.
- A piece of old cloth; a tattered piece of cloth; a shred, a tatter.
- A shabby, beggarly fellow; a ragamuffin.
- A ragged edge in metalworking.
- A sail, or any piece of canvas.
- A newspaper, magazine.
- A poor, low-ranking kicker.
- To decorate (a wall, etc.) by applying paint with a rag.
- To become tattered.
- A coarse kind of rock, somewhat cellular in texture; ragstone.
- To break (ore) into lumps for sorting.
- To cut or dress roughly, as a grindstone.
- A prank or practical joke.
- A society run by university students for the purpose of charitable fundraising.
- To scold or tell off; to torment; to banter.
- To drive a car or another vehicle in a hard, fast or unsympathetic manner.
- To tease or torment, especially at a university; to bully, to haze.
- An informal dance party featuring music played by African-American string bands.
- A ragtime song, dance or piece of music.
- To play or compose (a piece, melody, etc.) in syncopated time.
- To dance to ragtime music.
- To add syncopation (to a tune) and thereby make it appropriate for a ragtime song.