This is the 5441st most frequent Polish word.
szpiku
"Szpiku" is the genitive form of "szpik," which means "bone marrow" in English.
Expression to denote very deeply felt emotions or realizations, using 'szpik' metaphorically.
Dotarło do mnie aż do szpiku kości.
It got to me till the marrow of my bones.
Medical term referring to the substance inside bones responsible for producing blood cells.
Szpik kostny odgrywa kluczową rolę w układzie odpornościowym.
Bone marrow plays a key role in the immune system.
Figurative usage implying that qualities like courage imbue us deeply and essentially, associated with 'szpik'.