a device for showing the operating condition of some system
a signal for attracting attention
(chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction
by a small margin; "they could barely hear the speaker"; "we hardly knew them"; "just missed being hit"; "had scarcely rung the bell when the door flew open"; "would have scarce arrived before she would have found some excuse to leave"- W.B.Yeats
to a small degree or extent; "his arguments were somewhat self-contradictory"; "the children argued because one slice of cake was slightly larger than the other"