a. rare–1. [See next and -AN.] Bat-like. In quot. fig.
1874. Evening Star (Wash. DC), 25 Aug., 1/4. Evening papers are called vespertilian organs in Chicago.
1874. Ruskin, Proserpina, I. iv. § 22. Mr. Darwin … in his vespertilian treatise on the ocelli of the Argus pheasant.
