The spelling of the word "piar" might seem strange to some, but it is actually a valid word in Spanish. In IPA phonetic transcription, it would be pronounced as /ˈpiar/. The combination of the letters "pi" represents the sound /pj/, similar to the English word "peanut." The letter "a" represents the short vowel sound /a/, and the letter "r" is pronounced slightly rolled in Spanish. The meaning of the word "piar" is to chirp, twitter or peep like a bird.