omixochitl.

Headword: 
omixochitl.
Principal English Translation: 

a fragrant white lily-like flower (Polyanthes tuberosa, Polyanthes mexicana) (see Karttunen); associated with a deity

Orthographic Variants: 
omixōchitl
IPAspelling: 
omiʃoːtʃitɬ
Frances Karttunen: 

OMIXŌCHI-TL a fragrant white lily-like flower (Polyanthes tuberosa, Polyanthes mexicana) / azucena (M), flor de hechura de hueso (C) [(1)Cf.76r). R has the variant OMIYŌXŌCHI-TL See OMI-TL, XŌCHI-TL.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 179.

Attestations from sources in English: 

Omixochitl = the tuberose (Polianthes tuberosa). Etymology suggests bone-flower, and the flower was called flor de hueso in Spanish. Other names include nardo, azucena, amole, and amiga de noche. The flowers are cultivated near Guadalajara.
Emily W. Emmart Trueblood, "'Omixochitl' -- the Tuberose (Polianthes tuberosa)," Economic Botany 27:2 (April-June 1973), 157–173.

Attestations from sources in Spanish: 

omixochitl = Polianthus tuberosa; asociado con el dios Xochipilli
Bernardo Ortiz de Montellano, "Las hierbas de Tláloc," Estudios de cultura náhuatl 14 (1980), 287–314, ver la p. 290.