This is the 464th most frequent Czech word.
hlavy
The Czech word "hlavy" means "heads" in English (plural of "head").
Here, 'hlavy' (heads) is used as the plural form of 'hlava' (head), denoting the body part that was hit.
Děti si hrály s koulí a jedna zasáhla hlavy.
The children were playing with a ball, and one hit their heads.
In this sentence, 'hlavy' refers to the singular figurative shape or form of a head, used in a possessive form.
Nad stolem visela lampa ve tvaru hlavy.
Above the table hung a lamp shaped like a head.
Here, 'hlavy' is employed metaphorically to mean people or attendees, a usage common in statistical or quantitative contexts.