копец

копа́ (kopá, “heap”) +‎ -е́ц (-éc, masculine noun-forming suffix)

• IPA^(key): [kɐˈpʲet͡s]

копе́ц • (kopéc) m inan or m anim (genitive копца́, nominative plural копцы́, genitive plural копцо́в)

1. (colloquial, dialectal) end, death; bad or crazy thing or situation

   Synonyms: коне́ц (konéc), пизде́ц (pizdéc)

2. (dialectal) end, limit
3. (dialectal) boundary mark, boundary pit; hole in the woods that marks something
4. (dialectal) pit for storing vegetables in winter; small pit for temporary needs
5. (dialectal) well (hole for obtaining water)
6. (dialectal) small mound or knoll; kurgan
7. (dialectal) worker who digs up or puts manure on a cart

• капе́ц (kapéc) (more common in the first meaning)

• IPA^(key): [ˈkopʲɪt͡s]
• IPA^(key): [kɐˈpʲet͡s]

ко́пец or копе́ц • (kópec or kopéc) m anim (genitive ко́пца or копца́, nominative plural ко́пцы or копцы́, genitive plural ко́пцев or копцо́в)

1. (dialectal) owl
2. (dialectal) kite (bird)
3. (dialectal) red-footed falcon

Unclear.

• IPA^(key): [kɐˈpʲet͡s]

копе́ц • (kopéc) m inan (genitive копца́, nominative plural копцы́, genitive plural копцо́в)

1. (dialectal) steering oar, helm