beak:  English acquired beak via Old French bec from Latin beccus, which was probably borrowed from some Gaulish word (the original Latin word for ‘beak’ was rostrum). The Roman historian Suetonius (c. 69–140 AD) tells of one Antonius Primus, a native of Toulouse, who was nicknamed as a boy Beccus, ‘that is, hen’s beak’. The Old English term for ‘beak’ was bile ‘bill’. => soubriquet
mid-13c., "bird's bill," from Old French bec "beak," figuratively "mouth," also "tip or point of a nose, a lance, a ship, a shoe," from Latin beccus (source also of Italian becco, Spanish pico), said by Suetonius ("De vita Caesarum" 18) to be of Gaulish origin, perhaps from Gaulish beccus, possibly related to Celtic stem bacc- "hook." Or there may be a link in Old English becca "pickax, sharp end." Jocular sense of "human nose" is from 1854 (but also was used mid-15c. in the same sense).