rainguard

plural rainguards · alternative rain guard

1. A thing which protects (something) from rain.

   ... rainguard prevents water from reaching the sap bucket.

   1976, Agriculture Handbook, page 16

   1 more example

   ... rainguard, which, contrary to common opinion, instead of catching the rainfall and collecting it inside the leaf sheath, transfers it to the opposite side of the stalk and allows it to drip on the rainguard and ligule below.

   1911, M. L. Bowman, Corn: Growing, Judging, Breeding, Feeding, Marketing, page 52

2. In particular, a sword's chappe, when interpreted as being to protect against rain.

   Langets are small tongues of metal that sit outside the scabbard, so acting in a similar manner to a rainguard. Moreover, if the fit is right, they can help to snap the sword securely into the scabbard.

   2011 March 4, Mike Loades, Swords and Swordsmen, Casemate Publishers, →ISBN

   1 more example

   [...] swords might be fitted with small circular 'rainguards' of leather or (less frequently) sheet metal, folded in half over the cross of the sword. The conventional explanation is that these covered the scabbard mouth, protecting the sword [...] […] [This] sword has a rainguard.

   2020 June 25, Neil Grant, The Medieval Longsword, Bloomsbury Publishing, →ISBN, pages 16, 67