1. Of or pertaining to soot; producing soot; soiled by soot. Fire of sooty coal.
2. Having a dark brown or black colour like soot; fuliginous; dusky; dark. The grisly legions that troop under the sooty flag of acheron.
3. (Science: zoology) Sooty albatross, a tern (sterna fuliginosa) found chiefly in tropical seas.