Cuckoo is a noun referring to a bird in the genus Cuculus, widely known for its distinctive call and parasitic breeding behavior. It can also denote a clock or watch that chimes with a cuckoo scene. In colloquial use, “cuckoo” can describe someone acting irrational or eccentric. It’s commonly pronounced with two stressed syllables in some phrases, though the noun itself has primary stress on the first syllable.
Full pronunciation guide
