outer ditch
nounmasculinetécnico/ɐ̃.tɨ.'fo.su/rare
an·te·fos·so
Definition
An exterior ditch or moat in front of a fortification.
The outer ditch was filled with water as an additional defense.
Attackers had to cross the outer ditch first.
Common collocations
castle's outer ditchto dig an outer ditch
Etymology
Do prefixo 'ante-' + 'fosso' (do latim 'fossa', vala).