collabor

con-lābor (coll-) lapsus, ī,

to fall together, fall in ruins, crumble: moenia conlapsa ruinā sunt, L.: urbes motu terrae, Ta.: postquam conlapsi cineres, V. — Fig., to fall, sink: conlapsa membra referre, V.: subito dolore, O.: inter manūs alcuius, Cu.