From The Collaborative International Dictionary of English v.0.48:
Neat \Neat\ (n[=e]t), n. sing. & pl. [AS. ne['a]t; akin to OHG. n[=o]z, Icel. naut, Sw. n["o]t, Dan. n["o]d, and to AS. ne['o]tan to make use of, G. geniessen, Goth. niutan to have a share in, have joy of, Lith. nauda use, profit.] (Zool.) Cattle of the genus Bos, as distinguished from horses, sheep, and goats; an animal of the genus Bos; as, a neat's tongue; a neat's foot. --Chaucer. [1913 Webster]
Wherein the herds[men] were keeping of their neat. --Spenser. [1913 Webster]
The steer, the heifer, and the calf Are all called neat. --Shak. [1913 Webster]
A neat and a sheep of his own. --Tusser. [1913 Webster]
Neat's-foot, an oil obtained by boiling the feet of neat cattle. It is used to render leather soft and pliable. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Neat \Neat\, a. [See neat, n.] Of or pertaining to the genus Bos, or to cattle of that genus; as, neat cattle. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Neat \Neat\, a. [Compar. Neater; superl. Neatest.] [OE. nett, F. nett, fr. L. nitidus, fr. nitere to shine. Cf. Nitid, Net, a., Natty.] 1. Free from that which soils, defiles, or disorders; clean; cleanly; tidy. [1913 Webster]
If you were to see her, you would wonder what poor body it was that was so surprisingly neat and clean. --Law. [1913 Webster]
2. Free from what is unbecoming, inappropriate, or tawdry; simple and becoming; pleasing with simplicity; tasteful; chaste; as, a neat style; a neat dress. [1913 Webster]
3. Free from admixture or adulteration; good of its kind; as, neat brandy; to drink one's vodka neat. Hence: (Chem.) Pure; undiluted; as, dissolved in neat acetone. "Our old wine neat." --Chapman. [1913 Webster +PJC]
4. Excellent in character, skill, or performance, etc.; nice; finished; adroit; as, a neat design; a neat thief. [1913 Webster]
5. With all deductions or allowances made; net.
Note: [In this sense usually written net. See Net, a., 3.] [1913 Webster]
neat line (Civil Engin.), a line to which work is to be built or formed.
Neat work, work built or formed to neat lines. [1913 Webster]
Syn: Nice; pure; cleanly; tidy; trim; spruce. [1913 Webster]