Co-co
noun ·Rare ·Advanced level
Definitions
- 1 A wheel arrangement for diesel and electric locomotives signifying that a locomotive has six axles, each powered by a motor, on two bogies.
"With their high horsepower, the new Bo-Bos, of which six are on order for trial purposes, but which should ultimately number 50, will take over most of the Gotthard passenger workings from the 6,000 h.p. Co-Cos, permitting the latter to take a greater share of the steadily increasing freight workings over this route, the aim being to work 1,200-ton freight trains up the long 1 in 38-40 approaches to the Gotthard tunnel with 6,000 h.p. Co-Cos in pairs."
Example
More examples"With their high horsepower, the new Bo-Bos, of which six are on order for trial purposes, but which should ultimately number 50, will take over most of the Gotthard passenger workings from the 6,000 h.p. Co-Cos, permitting the latter to take a greater share of the steadily increasing freight workings over this route, the aim being to work 1,200-ton freight trains up the long 1 in 38-40 approaches to the Gotthard tunnel with 6,000 h.p. Co-Cos in pairs."
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.