Synonym of Herz aus Stein (“heart of stone”)

(idiomatic) to put something on hold / (idiomatic) to put something on the back burner

(youth slang) I don't care (dismissively expressing a lack of interest in the matter, typically with the undertone that the speaker wishes the recipient to leave)

iron (chemical element, Fe) / pick (miner's tool)

to freeze

(obsolete) of iron

Eisenach (an independent city in Thuringia, Germany)

a surname originating as an occupation

inflection of abeisen:
/ inflection of abeisen:

one should strike while the iron is hot