churr

• POS: Noun, Verb (usu participle)

CIDE DICTIONARY

churr, n. [Cf. Chirr.].

 A vibrant or whirring noise such as that made by some insects, as the cockchafer, or by some birds, as the nightjar, the partridge, etc.  [Webster 1913 Suppl.]

churr, v. i. 

 To make a churr, as a cockchafer.
"That's the churring of the nightjar."  [Webster 1913 Suppl.]

churr, v. t. 

 To utter by churring.  [Webster 1913 Suppl.]

OXFORD DICTIONARY

churr, var. of CHIRR.