Leaks of wind through the cracks. It comes from " chiflar " the meaning of whistling, already that sometimes the chifles or chifletes produced a whistle. See: whistle.
chifles is incorrectly written and it should be written as "Sibbles." being its meaning: You Sibbles. Action of whistling. As humming a tune with that sound, to expel the air pursing lips. It is also used by criminals, it chifló it. (Killed it )