drug, substance

agent, chemical substance / drug, medicine / dose

to use one's head

use one thing for many purposes / work someone hard

(idiomatic) go straight, quit a shady business, wash one's hands of some work or lifestyle which is less than respectable / (idiomatic, neologism) quit a business (regardless of its respectability)

Short for フランネルシャツ (furanneru shatsu, “flannel shirt”).

(informal) boyfriend's shirt

Alternative spelling of ワイシャツ (“button-down shirt”)

binder (material or clothing used in binding or flattening the breasts)

give somebody the cold shoulder, look at with disdain