foamer
In real, traceable use. Part of the curated seed collection; community review is coming.
Sense 1
Meaning · English
A railfan, particularly an obsessive one.
Register: derogatory, slang
Where it’s used:
Used
American English
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Sense 2
Meaning · English
A railfan, particularly an obsessive one. — Someone with a special interest in a particular topic.
Register: derogatory, slang
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “foamer” mean?
A railfan, particularly an obsessive one.
Is “foamer” formal or informal?
foamer is generally derogatory, slang.