Collins English-English Dictionary

telltale ['tεl"teɪl]

1. 1. n a person who tells tales about others

2. 2. n

3. 3. n an outward indication of something concealed

4. 4. n (as modifier)

   a telltale paw mark

5. 5. n any of various indicators or recording devices used to monitor a process, machine, etc

6. 6. n

7. 7. n another word for dogvane

8. 8. n [nautical] one of a pair of light vanes mounted on the main shrouds of a sailing boat to indicate the apparent direction of the wind