/spayst"owt"/ , adj. Slang.
1. dazed or stupefied because of the influence of narcotic drugs.
2. dreamily or eerily out of touch with reality or seemingly so; spacey.
Also, spaced .
[ 1965-70, Amer.; on the pattern of phrasal verbs with out marking perfectivity; space appar. by assoc. with "outer space" as, metaphorically, a place outside normal consciousness ]