Sign - a elementary linguistic unit linking a signifier to that which is signified; "The bond between the signifier plus the signified is arbitrary"--de Saussure beam, radio beam - a signal transmitted along a narrow path; guides plane pilots in darkness or undesirable weather conditions , 21 Sep. 2019 Definitely https://geschaftmega.de/die-emotionale-und-psychologische-wirkung-von-leuchtreklamen/