Wordnet 3.0
ADVERB (1)
1.
in the manner of something that has become a byword;
- Example: "this proverbially bitter plant, wormwood"
The Collaborative International Dictionary of English v.0.48:
Proverbially \Pro*ver"bi*al*ly\, adv.
In a proverbial manner; by way of proverb; hence, commonly;
universally; as, it is proverbially said; the bee is
proverbially busy.
[1913 Webster]
WordNet (r) 3.0 (2006):
proverbially
adv 1: in the manner of something that has become a byword;
"this proverbially bitter plant, wormwood"