a1382 (Bodl. 959) (1963) Judges xv. 15 A fowndyn cheekebon, þat is þe cheklappe [L. mandibulam] of an asse.
a1400 tr. Lanfranc (Ashm.) (1894) 116 (MED) Anotamie of..nose, chekelappis, mouþ.
a1425 (a1382) (Corpus Oxf.) (1850) Lev. xi. 29 A cokedril..hauynge the nether cheke lap vnmeuable, and meuynge the ouere.