地口 is read as じぐち (jiguchi) and means pun.
じぐち
jiguchi
じんこうしゅうちゅうちく
densely inhabited district
じしろ
land rent
ちほう
civilian society
ちじょう
this world
ち
bottom (of a package, book, etc.)
じもと
local
ちか
underground
ちり
geography
ちず
map
じぬし
landowner
ちめい
place name
じみ
quite