Cossor Ali denies knowing about the plot to blow up planes
There is "no doubt" the wife of a terrorist plotter wrote about her husband's desire for martyrdom in her diary, an interpreter has told a court.
Adal Abdalla told Inner London Crown Court the context showed this was what Cossor Ali meant by the word "shahada".
Defence barristers say it can be translated simply as "a good death".
Mrs Ali, 28, of Walthamstow, east London, denies failing to pass on information that would be useful in preventing an act of terrorism.
Her husband, Abdulla Ahmed Ali, was in September convicted of plotting to blow up transatlantic passenger jets using liquid explosives disguised as soft drinks.
Mr Abdalla referred to a notebook the prosecution claim proves Mrs Ali had known of her husband's plot since he had written his will in March 2004.
She wrote, in 2005, that she wanted to join her husband's "quest" and hoped he was granted the "highest level of shahada".
Mr Abdalla said: "When you look at this page in this context I have no doubt in my mind whatsoever that means martyrdom."
Defence barrister Baroness Helena Kennedy QC said shahada meant a "good death" in the eyes of Allah and not necessarily fighting.
She told Mr Abdalla: "You are bringing to your interpretation a hoard of other material extraneous to the actual text that you're supposed to be interpreting."
The notes were found in the flat Mrs Ali shared with her husband.
In one entry she said she had read a book about military commander Tariq bin Ziyad, and went on: "After reading it I am even happier with what you are doing. It makes me more eager to join you on your quest."
The court was also shown footage of a police interview in 2006 where Mrs Ali watched her husband's pre-suicide video.
In it, he said it was a Muslim's "obligation" to wage jihad.
Setting out reasons for the plan, he said: "It is to punish and humiliate the kufr (non-believers) and to teach them a lesson they will never forget."
He went on: "Now the time has come for you to be destroyed. You have nothing to expect but floods of martyrdom operations."
In the footage from the police station, Mrs Ali seemed to show little reaction apart from occasionally putting a hand to her mouth.
The trial continues tomorrow.