Drop-mǽlum

According to the Old English Dictionary:

drop-mǽlum

ad guttātim :-- Yrnþ dropmǽlum swíðe hluttor wæter very clear water runs drop by drop, Homl. Th. i. 508, 34. v, mǽl III. drop-mælum

Related words: By drops, drop by drop;