Definitions from Wiktionary ( )

▸ noun:  A facial expression comprised by flexing the muscles of both ends of one's mouth, often showing the front teeth, without vocalisation, and in humans is a common involuntary or voluntary expression of happiness, pleasure, amusement, goodwill, or anxiety.
▸ noun:  (figurative) Favour; propitious regard.
▸ noun:  (slang, dated) A drink bought by one person for another.
▸ verb:  (transitive, intransitive) To have (a smile) on one's face.
▸ verb:  (transitive) To express by smiling.
▸ verb:  (intransitive) To express amusement, pleasure, or love and kindness.
▸ verb:  (intransitive) To look cheerful and joyous; to have an appearance suited to excite joy.
▸ verb:  (intransitive) To be propitious or favourable; to countenance.
▸ verb:  (intransitive) Of ackee fruit: to open fully, indicating that it is no longer toxic, and ready to be picked.

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▸ Rhymes of smile

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