User:Urszag/culum
Possible examples of -aculum:
Also vernaculus (adj.)
Possible examples of feminine -cula instrumentals:
Diminutives?
Compare -bula/-bra nouns.
Odd bra nouns:
- scatebra: no l or r
- terebra, vertebra: preceding r (sign of old formation?)
-brum nouns with r:
- cribrum, vertebrum, terebrum?
Sources: