something that is communicated by or to or between people or groups

make the sign of the cross over someone in order to call on God for protection; consecrate

convey or express a meaning

communicate silently and non-verbally by signals or signs

a signal that encodes something (e.g., picture or sound) that has been recorded

the number is used in calling a particular telephone

a signal to begin (as in a race)

a signal announcing the approach of a storm (particularly a storm of marked violence)

a signal transmitted along a narrow path; guides airplane pilots in darkness or bad weather