(sometimes also used uncountably) A visible indication.
Physical evidence left by an animal.
A clearly visible object, generally flat, bearing a short message in words or pictures.
A wonder; miracle; prodigy.
An astrological sign.
Positive or negative polarity, as denoted by the + or - sign.
A specific gesture or motion used to communicate by those with speaking or hearing difficulties; now specifically, a linguistic unit in sign language equivalent to word in spoken languages.
Sign language in general.
An omen.
A property of the body that indicates a disease and, unlike a symptom, is unlikely to be noticed by the patient.
A military emblem carried on a banner or standard.
To make a mark
To make the sign of the cross
To indicate