Definition of wallpepper in English:

wallpepper

(also wall pepper)

noun

  • another term for omitted unresolving XREF to "mossy stonecrop" (see stonecrop)
    • ‘The plant's folk names are fascinating: Jupiter's Beard, old man and old woman, stonecrop, wall pepper, sengrene, and welcome-home-husband-though-never-so-drunk.’
    • ‘These rock figures in nature are grown over with wall pepper and sengrene even in steep mountain crevices.’

Pronunciation:

wallpepper

/ˈwôlˌpepər/