running rail
Word Rarity
Uncommon
Frequency: Zipf frequency 4.35 in modern English
12
Scrabble Score
11
Letters
2
Syllables
7
Unique Chars
Meaning
noun
A fence which marks the inside edge of a racecourse track.
Example Sentences
- "In order to reduce noise to a minimum, the running rails have been welded into 315 ft. lengths."
- "The system voltage is 630 volts d.c. and the supply to the trains is by top-contact third rail with running rail return."
- "When AC traction was being introduced this was recognised as a threat to track circuits. Harmonics of the switching frequency would appear in the traction return currents in the running rails and, potentially, this would cause wrong-side track circuit failures."