adjective
Air is less dense in the upper parts of the atmosphere. Our flat is on an upper floor. Her best notes are sung in the upper register
We visited the cataracts on the upper reaches of the Nile. We spent the holiday in upper Canada
These strata were laid down in the Upper Cretaceous period
The heading ought to be in upper case
Gregory thinks of himself as a member of the upper crust and won't associate with us
Purvis kowtows to whoever has the upper hand
noun
Stanley has been on his uppers since losing his job
US