sb. Obs. Mil. [ad. med.L. clēta, F. claie: see CLAYE.] A hurdle of wattle-work: see quot.
1711. Milit. & Sea Dict., Clates are the same as commonly we call Wattles, being made of strong Stakes, interwoven with Oziers, or other small pliable Twigs. The Use of them is to cover Lodgments overhead with much Earth heapd on them, [etc.].
Clate, obs. form of CLAUT v., CLEAT sb.