loc·a·tive (lŏk'ə-tĭv) adj. Of, relating to, or being a grammatical case in certain inflected languages that indicates place in or on which or time at which, as in Latin domī, "at home." n.
The locative case.
A form or construction in the locative case.
[New Latin locātīvus, from Latin locātus, past participle of locāre, to place; see locate.]
"grammatical case indicating place," 1804, from L. locus "place," on model of L. vocativus "vocative," from vocatus, pp. of vocare "to call, summon" (see voice).