The story
Origin uncertain. Shaka is not a word in the Hawaiian language, which lacks the /ʃ/ sound.
Etymology from Wiktionary, CC BY-SA 4.0.
shaka
Today it means: A greeting gesture in which the thumb and little finger are extended while curling the three middle fingers in a semi-fist, used to express a variety of positive meanings including all right, hello and goodbye. Full definition →