1. (n.) The track or trail of any wild animal; as, the spoor of an elephant; -- used originally by travelers in South Africa.

2. (v. i.) To follow a spoor or trail.

aroma breath broad hint catchword clue condensation trail contrail course cue cue word definite odor detectable odor effluvium emanation essence evidence exhalation flavor footstep fragrance fume gentle hint gesture glimmer glimmering hint hot lead implication index indication inkling innuendo insinuation intimation key key word kick lead line look nod nudge odor path piste prompt redolence savor scent sign signal signs smell stench step subtle odor suggestion suspicion symptom telltale tip-off trace traces track tract trail vapor trail vestige wake whiff whisper wink