Definition of expression

• the feelings expressed on a persons face; "a sad expression"; "a look of triumph"; "an angry face"
• expression without words; "tears are an expression of grief"; "the pulse is a reflection of the hearts condition"
• the communication (in speech or writing) of your beliefs or opinions; "expressions of good will"; "he helped me find verbal expression for my ideas"; "the idea was immediate but the verbalism took hours"