In`ter*clude" (?), v. t. [imp. & p. p. Intercluded; p. pr. & vb. n. Intercluding.] [L. intercludere, interclusum; inter between + claudere to shut. See Close, and cf. Interclose.] To shut off or out from a place or course, by something intervening; to intercept; to cut off; to interrupt. Mitford.

So all passage of external air into the receiver may be intercluded.