As bald as a coot - Completely bald
पूरी तरह से गंजा

As fine as frog's hair (simile) - Extremely fine, that is, delicate and slender
नाजुक और पतला

Bad hair day - a day on which everything seems to go wrong,
characterized as a day on which one's hair is particularly unmanageable
एक ऐसा दिन जिस दिन सब कुछ गलत होने लगता है

Big wig - an important person, especially in a particular sphere
एक महत्वपूर्ण व्यक्ति, विशेष रूप से एक विशेष क्षेत्र में

By the hairs on my chinny chin chin- no way
बिल्कुल नहीं