Definitions

1. adjective

impudent or presumptuous, especially in a boastful or arrogant manner

“The gally attitude of the new recruit was immediately noticeable to his superiors.”

2. noun

a gally (a type of gallnut or gall wasp, specifically the gall wasp Cynipidae)

“The scientist studied the unique characteristics of the gally in the forest.”

3. verb

to behave in a gally manner

“He gally swaggered into the room, drawing everyone’s attention.”