[lavancar]
variante(s): lavanchar
v. pr.
's'écrouler'
D: 1531 B.‑Alpes ⊂ DocMidiM 177,31 (slavancha, à lire 's lav‑)
FEW 5:101a [ʟᴀʙɪ̄ɴᴀ].