• Science and technology
• Tail (books), a part of a book
• Tails (operating system) or The Amnesic Incognito Live System, a Linux distribution designed for anonymity and privacy
• Tail (Unix), a Unix program used to display the last few lines of a file
• Tail, one of the extreme ends of a probability density function
• Terminal amine isotopic labeling of substrates
• Poly-A tail, part of a mature mRNA

• Tails, the reverse side of a coin
• Tailcoat or its rear section, a type of coat/suit used for evening dress
• Tail, the final batsmen in the batting order for cricket
• Fee tail or tail, an obsolescent term in common law
• Jabot (window), a kind of soft window treatment

पुच्छ ,छेप्प , पिच्छ , रक्तपुच्छक , दीर्घवाला long-tailed , चक्रवालधि curved-tail , पिच्छलतिका tail-feather , वक्रपुच्छ , पिच्छिल , पौच्छ ( pursue ) ,