Multiple dependent claim

a dependent claim which further limits and refers back in the alternative to more than one preceding independent or dependent claim. Acceptable multiple dependent claims shall refer to preceding claims using the terms "or, any one of, one of, any of, either." A multiple dependent claim may not depend on another multiple dependent claim, either directly or indirectly.

-- see 37 CFR 1.75 and  MPEP 608.01(n)

Context: Patent 

Any dependent claim which refers to more than one other claim.