let,n. An impediment or obstruction <free to act without let or hindrance>.

let,vb.1. To allow or permit <the court, refusing to issue an injunction, let the nuisance continue>.2. To offer (property) for lease; to rent out <the hospital let office space to several doctors>. [Cases: Landlord and Tenant  20. C.J.S. Landlord and Tenant §§ 27, 202(1, 2, 3, 4, 5, 9, 10), 203.] 3. To award (a contract), esp. after bids have been submitted <the federal agency let the project to the lowest bidder>. [Cases: Public Contracts  11. C.J.S. Public Administrative Law and Procedure §§ 8–9, 12, 16–17.]

[Blacks Law 8th]