Key
Part of speech: adjective
Definition: Indispensable. Important, salient.
Part of speech: verb
Definition: To fit (a lock) with a key. To fit (pieces of a mechanical assembly) with a key to maintain the orientation between them. (telegraphy and radio telegraphy) To depress (a telegraph key). (radio) To operate (the transmitter switch of a two-way radio). (more usually to key in) To enter (information) by typing on a keyboard or keypad. To vandalize (a car, etc.) by scratching with an implement such as a key. To link (as one might do with a key or legend). To mark or indicate with a symbol indicating membership in a class.
Part of speech: noun
Definition: An object designed to open and close a lock. An object designed to fit between two other objects (such as a shaft and a wheel) in a mechanism and maintain the orientation between them. A crucial step or requirement. A guide explaining the symbols or terminology of a map or chart; a legend. One of several small, usually square buttons on a typewriter or computer keyboard, most of which generally correspond to a particular character. One of a number of rectangular moving parts on a piano or musical keyboard, each causing a particular sound or note to be produced. One of various levers on a musical instrument used to select notes, such as a lever opening a hole on a woodwind. A hierarchical scale of musical notes on which a composition is based A device used to transmit Morse code. A piece of information (e.g. a passphrase) used to encode or decode a message or messages. In a relational database, a field used as an index into another table (not necessarily unique). A value that uniquely identifies an entry in an associative array. The free-throw lane together with the circle surrounding the free-throw line, the free-throw lane having formerly been narrower, giving the area the shape of a skeleton key hole. kilogram One of a string of small islands.
Example sentence: Memories are the key not to the past, but to the future.
Headstone
Part of speech: noun
Definition: A gravestone, a grave marker: a monument traditionally made of stone placed at the head of a grave.