It forms all or part of: indulge; indulgence; play; pledge; plight (v.) "to pledge;" replevin.
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit drmha-, drhya- "to fix, make firm;" Old Avestan derez- "fetter;" Gaulish delgu "to hold," Middle Welsh dala "to hold," Old Breton delgim "to hold;" Old Saxon plegan "vouch for," Gothic tulgjan "to fasten."
1867, in dialect, "to pet, indulge" (a child), from doll (n.). Usually with up. Meaning "to dress (up)" is by 1906, American English. Related: Dolled; dolling.
"to indulge (another), to minister to base passions, cater for the lusts of others," c. 1600, from pander (n.). Meaning "to minister to others' prejudices for selfish ends" is from c. 1600. Related: Pandered; panderer; pandering.