Added 9 October 2026
run-in
/ˈɹʌnˌɪn/ noun
noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about run-in at Wordnik → Where our words come from →
Origin
Derived from the verb run into. For the meaning "end-phase", it presumably comes a marathon race, where in the final part the runners run into the stadium and complete a lap.
From Wiktionary, via Kaikki.org (CC BY-SA)