A small book for keeping other people's addresses and phone numbers. / (computing) A computerized storage area for contact information such as e-mail addresses.

(Internet) A number assigned to each computer's or other device's network interface, which are active on a network. supporting the Internet Protocol, in order to distinguish each network interface, and hence each networked device) from every other network interface anywhere on the network.

Capable of adapting or of being adapted.

Supplemental or added to something.

Something added.

(obsolete) Any snake. / (chiefly Britain) A small venomous serpent of the genus Vipera / The puff adders, of Africa (genus Bitis). / (US, Canada) Any of several small nonvenomous snakes resembling adders

Someone who or something which performs arithmetic addition; a machine for adding numbers. / An electronic device that adds voltages, currents or frequencies. / Something which adds or increases.

Equal to or fulfilling some requirement.

A sufficient amount of; enough.

(obsolete) To equalize; to make adequate. / (obsolete) To equal.