Table
east | forward | event |
dog | bar/bolt | ? |
revolve | out of | symbol |
Your "big" is in fact dog if the picture is right. Note the little dot marking next to the top bar of the "asterisk".
My thoughts:
Maybe this is biased, but it could be a historical record with the time based on astronomy. It could be saying when an even happened, or it could be a poem.
"east dog revolve" could be speaking of Sirius, the dog star when it is in the east.
"forward bolt out of" could mean to run... if it's an event, maybe it's an army charging
"event ? symbol" speaking of the event
Overall it could mean something like
When Sirius is in the east, an army charged in the war. Or something like that.