noun

• (mathematics) A section of a tree having a finite number of branches

verb

• (transitive) To blow air on (something) by means of a fan (hand-held, mechanical or electrical) or otherwise.
  "We enjoyed standing at the edge of the cliff, being fanned by the wind."
• (transitive) To slap (a behind, especially).
  "Part of it was that as much as I respected filial devotion and as much as I liked Sarah Barstow, it would have been a real satisfaction to put her across my knees and pull up her skirts and giver^([sic]) her a swell fanning, for not taking a look at that driver."
• (intransitive, usually to fan out) To move or spread in multiple directions from one point, in the shape of a hand-held fan.
• (transitive) To dispel by waving a hand-held fan.
  "I attempted to fan the disagreeable odour out of the room."

noun

• (Hong Kong, dated) A unit of length, equivalent to 0.1 tsun (0.01 chek), or 0.00371475 metres.
  "1 chek (foot) = 14⅝ English inches divided into 10 tsün (inches) and each tsün into ten fan or tenths."

name

• (rail transport) The station code of Fanling in Hong Kong.