Sentence:  With this I maye be sure to come sauf / and goo sauf / and that the quene shal haue her lyberte as she had before / and neuer for no thynge that hath ben surmysed afore this tyme / she neuer fro this day stande in no peryll / for els sayd sir launcelot I dare auenture me to kepe her from an harder shoure than euer I kepte her<!--Prior quote:‘I dare adventure me to kepe her frome an harder <WSD>showre</WSD> than ever yet I had.'--> 
Meaning of the word marked with <WSD> tags:  A battle, an attack; conflict.