two-note call

1. 1.

   a birdcall having two notes

   “the two-note call of the cuckoo”

   Broaderbirdcall

Questions about two-note call

What does two-note call mean?

two-note call means "a birdcall having two notes".

Is two-note call a common word?

two-note call is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.