avocado Look up avocado at Dictionary.com
1763, from Sp. avocado, altered (by folk etymology influence of earlier Sp. avocado "lawyer," from same L. source as advocate) from earlier aguacate, from Nahuatl ahuakatl "testicle." So called for its shape. As a color, first attested 1947.
cinnamon Look up cinnamon at Dictionary.com
c.1390, from Gk. kinnamomon, from Phoenician word akin to Heb. qinnamon. Stripped from the bark of a tree in the avocado family. Ceylon cinnamon, the true cinnamon, is used in Britain, but American cinnamon is almost always from the related cassia tree of Southeast Asia and is stronger and sweeter.
guacamole Look up guacamole at Dictionary.com
1920, from Amer.Sp. guacamole, from Nahuatl ahuaca-molli, from ahuacatl "avocado" + molli "sauce."