Word: twinset
Part of speech: Noun
Syllables: twin
set
Definition: A pair of cylinders containing air for the diver to breathe.
Morphemes:
Affix: twin
Language: en
PoS: Noun
Meaning: A two-engine aircraft.
Affix: set
Language: en
PoS: Verb
Meaning: Of a heavenly body, to disappear below the horizon of a planet, etc, as the latter rotates.