ceroma

from The Century Dictionary.

• noun In classical antiquity, an unguent used by wrestlers.
• noun In ornithology, same as cere.

from the GNU version of the Collaborative International Dictionary of English.

• noun The unguent (a composition of oil and wax) with which wrestlers were anointed among the ancient Romans.
• noun (Anc. Arch.) That part of the baths and gymnasia in which bathers and wrestlers anointed themselves.
• noun (Zoöl.) The cere of birds.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A mixture of oil and wax.
• noun A cloth with which ancient wrestlers rubbed themselves, to make their limbs not only more sleek and less capable of gripping, but more pliable and fit for exercise.