(as) tough as old boots
US /əz tʌf əz oʊld buːts/
UK /əz tʌf əz oʊld buːts/

1.
kuat besi, tahan lasak
very strong and able to deal with difficult situations
:
•
My grandmother is 90 years old and still (as) tough as old boots.
Nenek saya berumur 90 tahun dan masih (se)kuat besi.
•
You need to be (as) tough as old boots to survive in this industry.
Anda perlu (se)kuat besi untuk bertahan dalam industri ini.