Word: finfoots
Part of speech: Noun
Syllables: fin
foots
Definition: Plural of finfoot;  although one species is known as a sungrebe
Morphemes:
Affix: fin
Language: en
PoS: Noun
Meaning: A similar appendage of a cetacean or other marine animal.
Affix: foot
Language: en
PoS: Noun
Meaning: Specifically, a human foot, which is found below the ankle and is used for standing and walking.
Affix: -s
Language: en
PoS: Suffix
Meaning: Used to form many pluralia tantum (nouns that are almost or entirely without singular forms).