丈長 is read as たけなが (takenaga) and means tall.
たけなが
takenaga
たけ
length (esp. of clothing)
じょうぶ
healthy
だけ
as much as
じょうじん
elder
じょうろく
one jō and six shaku (4.85m)
ますらおぶり
manly poetic style (e.g. in the Man'yōshū)
じょうふ
hero
たけくらべ
comparison of statures
はんちょう
squad leader
たいちょう
commanding officer
ゆうちょう
leisurely
じゅくちょう
principal of a private school