to  know  one's onions
know
nəʊ
new
<i>one's</i>
wʌnz
vanz
onions
ʌnjənz
anyēnz

ইংরেজিতে "know one's onions"এর সংজ্ঞা ও অর্থ

to know one's onions
01

to have a great deal of information regarding a particular subject 

to [know] {one's} onions definition and meaning
idiom
informal
উদাহরণ
Ask Priya about the tax rules; she knows her onions. 
LanGeek
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