train surfing
Riding on the roof, sides or back of a train, sometimes as a form of illegal extreme sportRiding on the roof, sides or back of a train, sometimes as a form of illegal extreme sport.
Meaning
1 senses(uncountable)Riding on the roof, sides or back of a train, sometimes as a form of illegal extreme sport.
1999: Deborah Lupton, Risk - It is also evident in the words of a sixteen-year-old Australian boy discussing the pleasure of ‘train-surfing', or riding a moving train on its roof. [published in UK]
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable