Scĭs'sor-tāil, n.

noun

(sĭz'zur-), n. (Ornith.) A South American bird (Milvulus forficatus), belonging to the family of fly-catchers. It has a forked tail, which it opens and shuts like a pair of scissors, when turning swiftly on the wing.

An engraved scissor-tail bird perched on a branch, its long forked tail extending behind it.
Scissor-tail (Milvulus forficatus).