| center of a circle |
the fixed point that is equidistant from all points that form a circle. |
| chock-a-block |
of a ship's hoisting tackle, drawn close together so that the blocks are touching. [2 definitions] |
| chuck-a-luck |
a gambling game in which players bet on the possible values of three rolled dice. |
| cock-a-doodle-doo |
a representation or imitation of the cry of a rooster. |
| come a cropper |
(informal) to suffer a failure or fiasco. [2 definitions] |
| compose a number |
in mathematics education, to add together different place values to make a complete number. For example, to compose the number 231, you would add the three place values that make up this number, a 200, a 30, and a 1. |
| compose a ten |
in mathematics education, to determine what number must be added to another number to make a total of ten. |
| cool as a cucumber |
showing no trace of anxiety or vulnerability. |
| cop a plea |
(informal) to plead guilty to a lesser charge in order to avoid trial on the original charge. |
| crack a book |
to open a book and read it, or to discipline oneself to study. |
| cut a wide swath |
to attract considerable attention; make a big impression. |
| d'or, in a field azure |
(combined French and English) of gold, on a blue background. |
| D.A. |
abbreviation of "District Attorney," the government prosecutor of criminal cases for a specified judicial district. |
| D.O.A. |
abbreviation of "dead on arrival." |
| dead as a doornail |
definitely dead, or beyond hope of revitalizing. |
| decompose a number |
in mathematics education, to separate a number into its component place values. For example, to decompose the number 231 you would write "200+30+1". |
| devil of a |
very difficult or frustrating. |
| ding-a-ling |
(informal) a person who is considered stupid, slow-witted, or foolish. |
| dos-à-dos |
do-si-do. |
| draw a blank |
to be unable to recall or recognize. [2 definitions] |