The most common and most likely answer to this crossword clue is the 3 plus 4 letter word DOG STAR
I've seen this crossword clue in The Daily Telegraph
D
O
G
S
T
A
R
More clues leading to the result DOG STAR
- Follows sailor’s night light
- Feature on short Venetian official as a shining example
- Lassie follows sailor!
- What sailors followed follows sailor
- Sirius Black material follows ghosts
- Follows sailor, followed by a sailor
- Bad person’s object of worship set up as one outshining the rest
- What may not be seen on cloudy night persistently bothers sailor
- Sirius follows Jack
- Follow a celebrity actor's bright spot
Buddy explains!
The straight part
We know that "Sirius" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sirius = dog star.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.