huecatlan.

Headword: 
huecatlan.
Principal English Translation: 

something deep, abysm (see Molina and Karttuen)

Orthographic Variants: 
uecatlan
IPAspelling: 
wehkɑtɬɑn
Alonso de Molina: 

uecatlan. cosa honda y profunda.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 155r. col. 2. Thanks to Joe Campbell for providing the transcription.

Frances Karttunen: 

HUEHCATLAN something deep, abysm / cosa honda y profunda (M), hondo, abismo, profundo (Z) Although Z marks the vowel of the last syllable long, X does not. In T the vowel is short, and the final N is missing. Although the N is present in HUEHCATLANOĀ as attested in T, the vowel before it is still short. See HUEHCA, -TLAN.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 83.

Attestations from sources in English: 

huecatlan (adjective) = deep, profound Daniel Garrison Brinton, Ancient Nahuatl Poetry: Containing the Nahuatl Text of XXVII Ancient Mexican Poems (1887), 154.