way-up1
/ˈweɪʌp/Geology
noun
Vertical orientation or sequence; especially the sequence of strata which corresponds to the chronological order of formation, with the most recent identified as uppermost.
Origin
1950s; earliest use found in Quarterly Journal of the Geological Society of London. From way + up.
way up2
/ˈweɪ ˌʌp/originally US
adverb
Far up; very high up.
adjective
Slang. Chiefly US. Excellent, first class; (sometimes) specifically of high social standing. Now rare.
Origin
Mid 19th century; earliest use found in Brother Jonathan. From way + up.