19a the name of an aspect of something used to refer to the whole thing such as when alcohol is called the bottle (7) -e-o-y- . is it meronym or metonym ? . 40d the highest vertex of a polyhedron (4)...
42a artic gulf making up part of the north west passage 6-3 -a-f-- -a- think might be baffin bay? 36d tv logo to show which channel is being watched 5 -d--- think may be ident?