From Wiktionary, the free dictionary
Literally, “to have a head lap” (in swimming, the traversal of one length of the pool).
- IPA(key): /a.vwaʁ yn lɔ̃.ɡœʁ d‿a.vɑ̃s/
avoir une longueur d’avance
- to have a head start, to have an edge [with sur ‘over someone’]