tlacueptli.

Headword: 
tlacueptli.
Principal English Translation: 

something turned over or sent back, something vaulted (see Karttunen and Molina)

IPAspelling: 
tɬɑkweptɬi
Alonso de Molina: 

tlacueptli. cosa buelta lo de arriba abaxo, o cosa buelta aquien la embio.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 119v. col. 2. Thanks to Joe Campbell for providing the transcription.

Frances Karttunen: 

TLACUEP-TLI pl: -MEH something turned over or sent back, something vaulted / cosa vuelta lo de arriba abajo o cosa vuelta a quien lo envió (M), volteado (T) T has C for P as in other derivations from CUEP(A) with TL and TZ. The C persists before –MEH in the plural. See CUEP(A).
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 258.

Attestations from sources in Spanish: 

tlacueptli = vuelto (de cuepa, dar vuelta)
Rémi Siméon, Diccionario de la lengua náhuatl o mexicana (Mexico: Siglo XXI, 1988), xli.