博徒 is read as ばくと (bakuto) and means gambler.
ばくと
bakuto
はく
doctor
はくぶつかん
museum
はかせ
instructor at the imperial court (ritsuryō period)
はくらんかい
fair
はくあい
charity
はくがく
erudition
はくし
はくぶつ
natural history
はくしき
extensive knowledge
はかた
Hakata (old but still commonly used name for Fukuoka)
はくがくりょっこう
wide learning and energetic activity
はくげんがく
linguistics