অর্থ : Metal device shaped in such a way that when it is inserted into the appropriate lock the lock's mechanism can be rotated.

অর্থ : Something crucial for explaining.

অর্থ : Pitch of the voice.

অর্থ : Any of 24 major or minor diatonic scales that provide the tonal framework for a piece of music.

অর্থ : A kilogram of a narcotic drug.

অর্থ : A winged often one-seed indehiscent fruit as of the ash or elm or maple.

অর্থ : United States lawyer and poet who wrote a poem after witnessing the British attack on Baltimore during the War of 1812. The poem was later set to music and entitled `The Star-Spangled Banner' (1779-1843).

অর্থ : A coral reef off the southern coast of Florida.

অর্থ : (basketball) a space (including the foul line) in front of the basket at each end of a basketball court. Usually painted a different color from the rest of the court.

অর্থ : A list of answers to a test.

অর্থ : A list of words or phrases that explain symbols or abbreviations.

অর্থ : A generic term for any device whose possession entitles the holder to a means of access.

অর্থ : Mechanical device used to wind another device that is driven by a spring (as a clock).

অর্থ : The central building block at the top of an arch or vault.

অর্থ : A lever (as in a keyboard) that actuates a mechanism when depressed.

অর্থ : Identify as in botany or biology, for example.

অর্থ : Provide with a key.

অর্থ : Vandalize a car by scratching the sides with a key.

অর্থ : Regulate the musical pitch of.

অর্থ : Harmonize with or adjust to.

অর্থ : Serving as an essential component.