I think so, 16 down is the hammerhead an african bird akin to the storks, that was U?B?E??? And I have umbrette. The n comes from siemens a unit of electrical conductance, and ofcourse hodden.
Just noticed the pattern I gave is not quite right. It should be ???e?t?n. Sorry everyone for misleading you aNd thanks Lie-in king for pointing it out. Still don't have the answer.
So sorry, my head is full of the spectrum crossword so iI have to apologise the pattern is ???e?t?n? Nine letters and I now think the second might be an"e".
Apologies again for confusion.