We don't have synonyms for ungula yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are angula and unguja.
(adj) :
relating to an angle or to angles; having an angle or angles; forming an angle or corner; sharp-cornered; pointed; as, an angular figure; measured by an angle; as, angular distance
(n) :
a bone in the base of the lower jaw of many birds, reptiles, and fishes
(adj) :
relating to an angle or to angles; having an angle or angles; forming an angle or corner; sharp-cornered; pointed; as, an angular figure; measured by an angle; as, angular distance
(n) :
a bone in the base of the lower jaw of many birds, reptiles, and fishes