The word "grall" is a rare term used in anatomy to refer to a bird's leg joint. It is pronounced as [grɔːl] in IPA phonetic transcription. The spelling of this word can be explained through its etymology. "Grall" derives from the Latin "crura", which means "legs". In English, "crura" became "grall", but the spelling was changed to avoid confusion with the more common word "grain". Despite its infrequent usage, "grall" remains a legitimate term in ornithology and avian anatomy.