Adjective

(en adjective)

Obvious or easy to notice.

* {{quote-book, year=1928, author=Lawrence R. Bourne

, title=Well Tackled! , chapter=7 citation , passage=“No, don't,” replied the superintendent; “in fact, I'd rather you made yourself conspicuous elsewhere. Go down to the landing stage and cross to New Brighton or Wallasey—doesn't matter which—and come back. No doubt you will be seen, and reported to have gone across.”}}

He was conspicuous by his absence.

Noticeable or attracting attention, especially if unattractive.

* 1969 , Saul Bellow, Mr Sammler's Planet , Penguin Books Ltd, page 6:

For his height he had a small face. The combination made him conspicuous .

He had a conspicuous lump on his forehead.

Adjective

Familiar, famous, renowned or widely known.

* , chapter=15

, title= The Mirror and the Lamp , passage=Edward Churchill still attended to his work in a hopeless mechanical manner like a sleep-walker who walks safely on a well-known round. But his Roman collar galled him, his cossack stifled him, his biretta was as uncomfortable as a merry-andrew's cap and bells.}}

* {{quote-magazine, year=2013, month=July-August, author= Philip J. Bushnell

, magazine=(American Scientist), title= Solvents, Ethanol, Car Crashes & Tolerance , passage=Furthermore, this increase in risk is comparable to the risk of death from leukemia after long-term exposure to benzene, another solvent, which has the well-known property of causing this type of cancer.}}

(computing, not comparable) Generally recognised; reserved for some usual purpose.

* 1972 , Vint Cerf, Jon Postel, RFC 322 - Well known socket numbers

We would like to catalog other sockets which are supposed to be well-known

* 2003 , John Mueller, .NET development security solutions

If the call to this function fails, you can assume the SID was invalid — even if it's a well-known SID.

* 2007 , Larry L Peterson, Bruce S Davie, Computer networks: a systems approach

A common approach is for the server to accept messages at a well-known port.