Definition from Wiktionary, the free dictionary
See also Appendix:Variations of "d"
- had (marking the pluperfect tense)
- (some dialects) Had, possessed.
- Polly Von - She’d her apron wrapped about her and he took her for a swan
- I’d like to help, but I have no time.
- (colloquial) Did.
Related terms 
Usage notes 
- In most dialects, -’d is only used to mark the pluperfect tense (“I’d done something.”, “I had done something.”), and not to signify possession in the past (“I had something.”). Some dialects, however, use -’d for both.
- (archaic) traditional English past tense indicator, largely replaced by -ed.
- Shakespeare - Hath thou mark’d the dawn of next?
- Used to form the past tense of some verbs that are in the form of numerals, letters, and abbreviations, especially in online communication. Compare ’s.
- Google Plus - You +1’d this.
- I just lol’d but then stopped and realized this wasn’t funny.