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tumbling car
tumbling car n. 
/ˈtʌmbl̩ɪŋ kɑː/,
Brit. /ˈtʌmblɪŋ kɑː/
, /ˈtʌmblɪŋ kɑː//ˈtʌmbl̩ɪŋ kɑː/U.S. /ˈtəmb(ə)lɪŋ ˌkɑr/
a tumbrel./ˈtəmb(ə)lɪŋ ˌkɑr/ΘΠ
society > travel > means of travel > a conveyance > vehicle > cart, carriage, or wagon > cart or wagon for conveying goods > [noun] > types of > dumper or tipper
tumbril1440
tumbling car1811
tilt-cart1834
dumper1856
tipper1920
1811 in Chambers's Jrnl. 11 Jan. (1845) 31/2 The chief part..was brought from the sand~beds of Esk in tumbling cars.
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as lemmas