Word: poopdecks
Part of speech: Noun
Syllables: poop
decks
Definition: Plural of poopdeck;  which in sailing ships was usually elevated as the roof of the stern or "after" cabin, also known as the "poop cabin"
Morphemes:
Affix: poopdeck
Language: en
PoS: Noun
Meaning: Alternative form of poop deck; an exposed partial weather deck on the stern superstructure of a ship
Affix: -s
Language: en
PoS: Suffix
Meaning: Used to form many pluralia tantum (nouns that are almost or entirely without singular forms).