In organ-building, an unusually shrill mixturestop.(noun)
The Century Dictionary (Public Domain)
Use "acuta" in a sentence
"The snails with banded shells may be one of the 2 Cepaea species present in Great Britahn, perhaps C. hortensis; whereas the tall-shelled snail climbing up the log looks like either Cochlicella acuta or C. barbara."
"These include the osprey (Pandion haliaetus) and wild ducks such as Anas discors, Anas cyanoptera, Anas acuta, Anas clypeata and Anas americana."
"Very rich in bird species, and the most important winter habitat for waterfowl and birds of prey such as Anas discors, A. cyanoptera, A. acuta, A. clypeata and A. americana, and the osprey Pandion haliaethus."