sam·phire / ˈsamˌfīr/ • n. 1. (also rock samphire) a European plant (Crithmum maritimum) of the parsley family that grows on rocks and cliffs by the sea. Its aromatic, fleshy leaves were formerly much used in pickles. 2. (also marsh samphire) another term for glasswort.

samphire
1. Rock samphire, St Peter's herb, succulent plant of cliffs and salt marshes (Crithmum maritimum, member of carrot family); grows on coastal rocks, and has fleshy aromatic leaves which may be eaten raw, boiled, or pickled.

2. Marsh samphire (glasswort, sea asparagus), Salicornia spp., grows in salt marshes, is salty, and is eaten cooked as a vegetable.

samphire cliff plant. XVI (samp(i)ere). — F. (herbe de) Saint Pierre ‘St. Peter’s herb'.