1) Expression 2) Locution 3) Often said 4) Saying 5) Widely known and spoken of 1) Known 2) Recognizable 
• (a.) Mentioned or comprised in a proverb; used as a proverb; hence, commonly known; as, a proverbial expression; his meanness was proverbial. • (a.) Of or pertaining to proverbs; resembling a proverb.
Pro·ver'bi·al adjective [ Latin proverbialis : confer French proverbial .] 1. Mentioned or comprised in a proverb; used as a proverb; hence, commonly known; as, a proverbial expression; his meanness was proverbial . « In case of excesses, I take the German 
[adj] - of or relating to or resembling or expressed in a proverb 2. [adj] - widely known and spoken of
proverbial 1. Resembling, characteristic of, or of the nature of a proverb.2. Expressed in a proverb or proverbs; a reference to something that has been the subject of a proverb.
adjective widely known and spoken of; `her proverbial lateness`; `the proverbial absentminded professor`; `your proverbial dizzy blonde`
of, pertaining to, or characteristic of a proverb: proverbial brevity. · expressed in a proverb or proverbs: proverbial wisdom. · of the nature of or resembling a proverb: proverbial sayings. · having been made the subject of a proverb: the proverbial barn door which is closed too late. · having become an object of common mention...
[SAT terms] relating to or resembling a condensed but memorable saying