Meaning

noun the act of displaying something ostentatiously

verb display proudly; act ostentatiously or pretentiously

originOf North Germanic origin. Perhaps related to Norwegian flanta (“to show off, wander about”), Icelandic flana (“to rush about, act rashly or heedlessly”) and then also to French flâner (“to wander around, loiter”). Alternatively, it could be related to Swedish flankt (“loosely, flutteringly”) (compare English flaunt-a-flaunt), from flanka (“waver, hang and wave about, ramble”), a nasalised variant…

Etymology from Wiktionary, CC BY-SA 3.0