What does prototypes mean in crosswords?

prototypes means: First models used to test a design.

Which crossword clues can have prototypes as the answer?

Possible clues for prototypes include "Early models".

Word entry · 10 letters

Best crossword clue

"Early models"

10 letters · collected on this word page

10 lettersSorted eoopprsttyStarts with PEnds with S1 clues

1P2R3O4T5O6T7Y8P9E10S

01“Early models”10 letters

Not quite right?

P_________