[ˈpɛntəɡ(ə)n], (Noun)

Definitions:
- a plane figure with five straight sides and five angles


Phrases:

Origin:
late 16th century: via Latin from Greek pentagōnon, neuter (used as a noun) of pentagōnos ‘five-angled’

[ˈpɛntəɡ(ə)n], (Noun)

Definitions:
- the pentagonal building serving as the headquarters of the US Department of Defense, near Washington DC. Part of the building was badly damaged in the terrorist attacks of 11 September 2001


Phrases:

Origin: