Definify.com
Webster 1913 Edition
Top-drain
Top′-drainˊ
,Verb.
T.
To drain the surface of, as land;
as, to
. top-drain
a field or farmDefinition 2024
top-drain
top-drain
English
Verb
top-drain (third-person singular simple present top-drains, present participle top-draining, simple past and past participle top-drained)