A folded paper element which pops up from a book, greeting card, etc.
A pop-up ball: a ball that has been hit to a considerable height above the infield or the shallow outfield; a pop fly.
A business that quickly pops up, such as a temporary restaurant.
A pop-up advertisement; an advertisement that is triggered to appear on a computer screen when an Internet user accesses a particular web page.
Opening out to form a three-dimensional structure when the page of a book is opened.
Coming into view suddenly from a concealed position.
Employing the cold launch technique.
Operating or existing for a brief period only; temporary.
A clearly visible object, generally flat, bearing a short message in words or pictures.
An astrological 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.
A wonder; miracle; prodigy.
A perceptible (e.g. visible) indication.
A property of the body that indicates a disease and, unlike a symptom, can be detected objectively by someone other than the patient.
A military emblem carried on a banner or standard.
Physical evidence left by an animal.
A semantic unit, something that conveys meaning or information (e.g. a word of written language); (linguistics, semiotics) a unit consisting of a signifier and a signified concept. (See sign (semiotics).)
An omen.
Positive or negative polarity, as denoted by the + or - sign.
To write (one's name) as a signature.
To validate or ratify (a document) by writing one's signature on it.
To communicate using gestures to (someone).
To bless (someone or something) with the sign of the cross; to mark with the sign of the cross.
To engage (a sports player, musician etc.) in a contract.
To determine the sign of
To cross oneself.
To furnish (a road etc.) with signs.
More generally, to write one's signature on (something) as a means of identification etc.
To write one's signature.
To finalise a contractual agreement to work for a given sports team, record label etc.
To use sign language.
To communicate or make known (a meaning, intention, etc.) by a sign.
To calculate or derive whether a quantity has a positive or negative sign.
To mark, to put or leave a mark on.
To communicate using a gesture or signal.