With P.A.C. bond C.M.O. classes, the period before the P.A.C. sinking fund becomes effective. With multifamily loans , the period of time during which prepayment is prohibited.
LOCK-OUT
Meaning of LOCK-OUT in English
Campbell R. Harvey. Hypertextual finance English glossary. Английский словарь гипертекстовых финансов. 2012