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tri-axle
tri-axle n.
Brit. 
/ˈtrʌɪaksl/
, /ˈtrʌɪaksl/U.S. /ˈtraɪˌæks(ə)l/
a trailer or articulated lorry with three (rear) axles./ˈtraɪˌæks(ə)l/ΘΚΠ
society > travel > means of travel > a conveyance > vehicle > powered vehicle > motor lorry, truck, or van > [noun] > truck or lorry > articulated lorry > trailer or types of trailer
pole trailer1919
semi-trailer1919
pantech1942
Queen Mary1942
semi1942
tautliner1970
Ohio spread1971
spread1971
tri-axle1971
semi-truck1975
1971 M. Tak Truck Talk 173 Triaxle, a semi with three rear axles and consequently a greater weight-carrying allowance.
1978 Detroit Free Press 16 Apr. f 8/1 (advt.) Trailer: 1967 Ravens 29′ dump on 34′ frame, tri-axle with air-lift.
1981 Daily Tel. 10 Dec. 9 (caption) A..38-tonne tri-axle lorry.
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