from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. One drop at a time, drop by drop
- adv. By drops or small portions
from the GNU version of the Collaborative International Dictionary of English
- adv. By drops or small portions.
from The Century Dictionary and Cyclopedia
- Drop by drop; in small portions at a time.
From Middle English dropmele, from Old English dropmǣlum ("one drop at a time"), equivalent to drop + -meal. More at drop, meal. (Wiktionary)