something straight and long (see Molina and Karttunen)
IPAspelling:
melɑktik
Alonso de Molina:
melactic. cosa derecha y luenga. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 55r. col. 2. Thanks to Joe Campbell for providing the transcription.
Frances Karttunen:
MELACTIC something long and straight / cosa derecha y luenga (M) [(2)Tp. 136, 141]. T also has MELAC as an internal component of OHUAMELAC-TLI ‘long, whole stalk of cane.’ There is a variant in T, MELAZTIC, which appears to be synonymous. See MELĀHU(A). Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 143.