borrowed from New Latin, borrowed from Greek aigíthallos, aigíthālos "titmouse," probably derivative of aígithos "small passerine bird, titmouse"
1886, in the meaning defined above
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“Aegithalos.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Aegithalos. Accessed 25 Sep. 2023.
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