The most common and most likely answer to this crossword clue is the 5 plus 3 letter word TRAIN SET
I've seen this crossword clue in The Guardian
T
R
A
I
N
S
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T
More clues leading to the result TRAIN SET
- Instruct class producing toy
- Toy provides instruction, and in French
- Toy teaches French also
- Coaches and French model railway
- Model tracks creative work reversing gusset
- School arranged something for kids’ amusement
- Ultimately violent, nastier sort of toys for boys?
- Model usually having points to teach class
- Something for the boys, as shower framed in trial hauled up
- Leaning back, try to drink water — child’s play, is it?
Buddy explains!
The straight part
We know that "Model tracks" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case model tracks = train set.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.