Hear a word and type it out. How many can you get right?
TAKE THE QUIZ“rail frog”
We have one entry that includes the term rail frog.
spring-rail frog
noun: a frog having a movable wing rail held against the point rail by springs and normally presenting an unbroken running surface to wheels using the main track but operating also to permit the passage of trailing wheels from a diverging track
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Merriam-Webster unabridged
