Ear-tag

noun
1.
an identification tag fastened to the ear of an animal.

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[urth] /ɜrθ/ noun 1. (often initial capital letter) the planet third in order from the sun, having an equatorial diameter of 7926 miles (12,755 km) and a polar diameter of 7900 miles (12,714 km), a mean distance from the sun of 92.9 million miles (149.6 million km), and a period of revolution of 365.26 days, […]
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[ur-thuh] /ˈɜr θə/ noun 1. a female given name.
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noun 1. .