get to know or become aware of, usually accidentally | set straight or right |
trap; especially in an error or in a reprehensible act | make right or correct |
establish after a calculation, investigation, experiment, survey, or study | reduce to a fine, unmixed, or pure state; separate from extraneous matter or cleanse from impurities |
find out, learn, or determine with certainty, usually by making an inquiry or other effort | convert into direct current |
| bring, lead, or force to abandon a wrong or evil course of life, conduct, and adopt a right one |
| determine the length of |