Word: heartworms
Part of speech: Noun
Syllables: heart
worms
Definition: Plural of heartworm;  is a parasitic roundworm that is a type of filarial worm, a small thread-like worm, that causes dirofilariasis
Morphemes:
Affix: heart
Language: en
PoS: Verb
Meaning: To form a dense cluster of leaves, a heart, especially of lettuce or cabbage.
Affix: worm
Language: en
PoS: Noun
Meaning: More loosely, any of various tubular invertebrates resembling annelids but not closely related to them, such as velvet worms, acorn worms, flatworms, or roundworms.
Affix: -s
Language: en
PoS: Suffix
Meaning: Used to form regular plurals of nouns.