[one's] concentration disperses; to be distracted

a parietal bone

a mandible (lower jaw)

return to Japan

to return to Japan

a gagaku drum, such as a 大(だ)太(だい)鼓(こ) (dadaiko, “large drum”), a 釣(つり)太(だい)鼓(こ) (tsuridaiko, “hanging drum”) or a 担(にない)太(だい)鼓(こ) (ninaidaiko, “portable drum”)

step ladder (inverted V shape)

(idiomatic) to have one's attention attracted

a hipbone; a coxal bone

(idiomatic) to faint, to lose consciousness / (idiomatic) to be overwhelmed