(transitive, archaic) To distinguish, to make noteworthy. / (transitive, archaic) To display or make known (an attribute, quality, etc.); to call attention to.

(baseball) A sign from the third base coach, or whoever the batter receives signals from, telling the batter that no matter what he will not swing at the next pitch.

(astrology) Any of the twelve astrological signs.

(astrology) Any of twelve signs, corresponding to constellations, that are used as the basis of astrology

A sign indicating that a certain facility (e.g. parking space, toilet) is reserved for disabled people.

An isotopic signature

(physics, chemistry) A set of ratios of the abundances of different isotopes of specified elements in a sample, used as a diagnostic test of the sample's origin, or of its age

(music, broadcasting) The tune that opens and/or closes a radio or television programme.

A triangle at an intersection, formed by the two roads or rights-of-way and a third line, which must be kept clear of obstructions such as hedges so that people in one road can see cars approaching on the other.

(mathematics) Synonym of significant figure