Definition of "nonstop"

With business-class seats on nonstops from British Airways and Cathay Pacific often priced up to $8,000 round trip, Mr. Exton typically flew cheaper alternatives that saved money but required layovers and plane switches.

2007 October 14, David Kaufman, “Discounters Are In for the Long Hauls”, in New York Times‎

[In Hungary:] Most department stores and gift shops are open weekdays 10–5 or 6, Saturday until 1. Grocery stores are generally open weekdays from 7 or 8 am to 7 pm; “nonstops,” or éjjeli-nappali,[sic] are open 24 hours.

1994, Christopher Billy, editor, Eastern Europe: Hungary, Poland, Romania, Slovakia, the Czech Republic and Bulgaria (Fodor's Travel Guides), New York, NY: Fodor's Travel Publications, page 203

There's usually something open on most holidays apart from the evening of 24 December when even the nonstops stop.

2003, Time Out Budapest, page 233

The Prague discos were bursting with bright leggings and bangles, and headbands and Rock-and-Troll leather dominated the Slayer inundated underground nonstops—Central Europe was where the West had shipped the eighties shit surpless when they were through with it.

2017, Daniel Arthur Smith, From the Inside

Some of these consonants are stops, some are non-stops (continuants, see 11.2); some are voiced, others voiceless. It doesn't therefore look as if these consonants can have anything in common.

2009, Christopher McCully, The Sound Structure of English: An Introduction (Cambridge Introductions to the English Language), Cambridge: Cambridge University Press, published 2012, page 182