flat-bottom
Definitions
Adjective. [C1]
Examples
“The axle-pulleys should be not less than two-and-a-half-inch wheels with flat-bottom channels or grooves.”
“Two standard types of flat-bottom track were introduced as early as 1949, and some 1,570 miles had been laid down to the end⟳ of 1950.”
“With secondhand bullhead rail almost unobtainable, the NYMR has been forced to go for new flat-bottom rail and orders are being placed; 58 fb rails are already en route to the railway.”
CEFR level
C1
Advanced
This word is part of the CEFR C1 vocabulary — advanced level.
This word is part of the CEFR C1 vocabulary — advanced level.
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