noun, noun or participle which takes 'suru'
jocular name; humorous nickname; playful term
A name or term used in jest, often among friends or in lighthearted contexts. Can be used as a noun or with する to mean 'to call someone by a jocular name'.
彼はよく友達に戯称をつける。
He often gives his friends humorous nicknames.
その戯称は彼の癖から来ている。
That jocular name comes from his habit.