do's and don'ts definition
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do's and don'ts
Rules or customs concerning some activity, as in It's important to know the do's and don'ts of diplomatic receptions. This expression alludes to what one should and should not do or say. [c. 1900]
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |