Exact historical dictionary sense
Unique in Webster's 1913 dictionary
The 1913 record labels unique as adjective. Its source-bounded etymology and selected historical definition appear below.
[F. unique; cf. It. unico; from L. unicus, from unus one. See One.]
Cross-verified historical senseIn Webster's Revised Unabridged Dictionary (1913), "unique" is labeled adjective. Its etymology is recorded as: "[F. unique; cf. It. unico; from L. unicus, from unus one. See One.]" The selected historical definition says: "Being without a like or equal; unmatched; unequaled; unparalleled; single in kind or excellence; sole."