Pugil stick
Pugil stick is a bō or Training weapon.
In detail
Its recorded use is sports training.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Pugil stick”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q7258954: Pugil stick
Consult the source