Section 2(1a)(n) in The Calcutta Improvement Act, 1911
(n)[ the expressions "bustee", "drain", "public street" and "street alignment" have the same meaning as in clauses (10), (26), (60) and (72), respectively, of section 5 of the Calcutta Municipal Act, 1951] [Clause (n) substituted by W.B. Act 32 of 1955.].