backtag

== English == === Etymology === From back +‎ tag. === Noun === backtag (plural backtags) An identifying tag affixed to the back of an animal. Coordinate terms: collar, dog tag, earmark, ear tag === Verb === backtag (third-person singular simple present backtags, present participle backtagging, simple past and past participle backtagged) (transitive) To fit (an animal) with a tag of this kind. Coordinate terms: earmark, ear-tag