(num. adj.), one, 2.527, et al.; one alone, a single one (emphatically), 1.47; only, alone, 9.544; one in particular, 5.704; with a comparative, 1.15; with a superl., 2.426; with ante aliōs, 3.321; common, 5.308; one and the same, at once, 10.871; pl., one, 2.642; ad ūnum, to a man, without exception, utterly, 5.687; in ūnum, in one, together, 12.714; (adv.), ūnā, in one place or at one time, together with, at once, at the same time, 3.634, et al.; with -que following, 11.864.
Full Lasla Lemma
ūnus, a, um (gen. ūnīus, dat. ūnī)