nib (n.)

"beak or bill of a bird," Old English nebb "beak, nose; human face, countenance; beak-shaped thing," from Proto-Germanic nabja "beak, nose" (source also of Old Norse nef "beak, nose," Middle Dutch nebbe "beak," Old High German snabul, German Schnabel "beak," Old Frisian snavel "mouth"), which is of uncertain origin.