I get that and you are not alone. But that's why I try to avoid the word "cull". If a word has different meanings to different people then to me it has no meaning useful in general conversation. All it does is confuse. If I mean kill I try to say kill. If I mean give away or sell I try to...
cull
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verb
ˈkəl
culled; culling; culls
Synonyms of cull
transitive verb
1
: to select from a group : CHOOSE
culled the best passages from the poet's work
Damaged fruits are culled before the produce is shipped.
2
: to reduce or control the size of (something, such as a herd) by removal...