treble-heading
The use of three locomotives at the front, or head, of a trainThe use of three locomotives at the front, or head, of a train.
Meaning
1 senses(uncountable)The use of three locomotives at the front, or head, of a train.
Word family
1 related wordsRelateddouble-heading
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable