1) Having something on top 2) Head 1) Overcame 
• (a.) Having its vertical height greater than the half span; -- said of an arch. • (imp. & p. p.) of Surmount • (a.) Partly covered by another charge; -- said of an ordinary or other bearing.
Sur·mount'ed adjective 1. (Architecture) Having its vertical height greater than the half span; -- said of an arch. 2. (Her.) Partly covered by another charge; -- said of an ordinary or other bearing. 
In heraldry, the term surmounted describes something partly covered by another charge.
[adj] - having something on top
adjective having something on top; `columns surmounted by statues`