in·still also in·stil (ĭn-stĭl') tr.v.
in·stilled, in·still·ing, in·stills also in·stils
To introduce by gradual, persistent efforts; implant: "Morality . . . may be instilled into their minds"(Thomas Jefferson).
To pour in (medicine, for example) drop by drop.
[Middle English instillen, from Latin īnstīllāre : in-, into; see in-2 + stīllāre, to drip, drop (from stīlla, drop).] in'stil·la'tion (ĭn'stə-lā'shən) n., in·still'er n., in·still'ment n.
1533, "to introduce (feelings, etc.) little by little," from L. instillare "put in by drops," from instillare "to drop, trickle," in- "in" + stilla "a drop." (see distill).
Main Entry: in·still Pronunciation: in-'stil Function: transitive verb Inflected Forms: in·stilled; in·still·ing : to cause to enter especially drop by drop <instill medication into the infected eye>