| ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷ transitive verb
: to deepen excessively especially through erosive action (as of water or ice)
the overdeepened main valleys — A.E.Trueman
| ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷ transitive verb
: to deepen excessively especially through erosive action (as of water or ice)
the overdeepened main valleys — A.E.Trueman
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012