1973, Thomas Kinsella, “The Clearing†in Antaeus (magazine), ed. Daniel Halpern, page 105:Impenetrable growth surrounds him. // Owlful. Batful. // Great moths of prey.
1984, Punch (magazine) CCLXXXVI/ii, page 67:Mrs Adcock will invariably force you to take two, leaving you to stagger into the owlful night.
2001, J. Allyn Rosser, Misery Prefigured, part three, “Rods and R.â€, pages 40–41, lines 34–36:What // is that on the unmooned owlful slope, // the silver movement five yards west of your glance?