"hobby" in the noun sense
1. avocation, by-line, hobby, pursuit, sideline, spare-time activity
an auxiliary activity
2. hobby, hobbyhorse, rocking horse
a child's plaything consisting of an imitation horse mounted on rockers the child straddles it and pretends to ride
3. hobby, Falco subbuteo
small Old World falcon formerly trained and flown at small birds
Source: WordNet® (An amazing lexical database of English)
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