variants:
or belt line
plural beltlines or belt lines
Definition of beltline
1
: a line encircling the narrowest part of the waist : waistline
also
: the part of a piece of clothing that covers the waistline
The three of them scuffled for a few seconds before the purse-snatcher reached for a pistol tucked in his beltline. — Elliott Woods
2
automotive
: the line of an automobile body along the side of the vehicle just below the windows
The car has a low beltline and a lot of glass for good visibility.— Marshall Schuon
3a
usually belt line
: a railroad going wholly or partly around a city for the interchange of traffic between trunk lines or for handling traffic to terminals off the trunk lines
b
: a transport line (such as a highway) that typically encircles a city
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Merriam-Webster unabridged
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Time Traveler for beltline
The first known use of beltline was in 1863
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