- The definition of a chap is a man or boy.
A man is an example of a chap.
- To chap is defined as to become cracked or dry.
When your skin becomes dry and prone to cracking, this is an example of a time when your skin begins to chap.
A young chap.
Origin of chapprobably ; from Middle English cheppe ; from uncertain or unknown; perhaps
Origin of chap; from chapman
verbchapped chapped, chap·ping, chaps
Origin of chapMiddle English chappen.
Origin of chapShort for chapman.
This word's existence in the US can be seen in the Pennsylvania German term Tschaepp (“guy”).
Shortened from chapman (“dealer, customer”) in 16th century English.
(third-person singular simple present chaps, present participle chapping, simple past and past participle chapped)
Related to chip.
- (archaic) The jaw (often in plural).
- One of the jaws or cheeks of a vice, etc.
From Northern English chafts (“jaws”).
chap - Computer Definition
An authentication scheme used in Pointto-Point Protocol (PPP) remote access servers (RASs) to validate the identity of a remote user. CHAP employs a challenge-response mechanism that challenges the remote user with a random number.The user responds with a digest, which is an encrypted password based on the random number challenge.The RAS then decrypts the password using that same random number key to verify the identity of the remote user. This approach is much more secure that the predecessor Password Authentication Protocol (PAP). See also authentication, encryption, PAP, password, PPP, and RAS.
(Challenge Handshake Authentication Protocol) An access control protocol for dialing into a network that provides a moderate degree of security. When the client logs onto the network, the network access server (NAS) sends the client a random value (the challenge). The client encrypts the random value with its password, which acts as an encryption key. It then sends the encrypted value to the NAS, which forwards it along with the challenge and username to the authentication server. The CHAP server encrypts the challenge with the password stored in its database for the user and matches its results with the response from the client. If they match, it indicates the client has the correct password, but the password itself never left the client's machine. See PAP, PPP and challenge/response.