Webster's 1913 Dictionary
BROOKLIME
BROOKLIME Brook "lime `, n. (Bot. )
Defn: A plant (Veronica Beccabunga ), with flowers, usually blue, in axillary racemes. The American species is V. Americana. [Formerly written broklempe or broklympe.]
New American Oxford Dictionary
brooklime
brook lime |ˈbro͝okˌlīm ˈbrʊklaɪm | ▶noun a speedwell with smooth, fleshy leaves and deep blue flowers on long stalks. It grows in wet areas, where the stems take root or float in the water. [Genus Veronica, family Scrophulariaceae: several species, in particular V. beccabunga of Eurasia and the American brooklime (V. americana ).] ORIGIN Middle English broklemok, from brook 1 + hleomoce, the name of the plant in Old English.
Oxford Dictionary
brooklime
brook |lime |ˈbrʊklʌɪm | ▶noun [ mass noun ] a Eurasian speedwell with smooth fleshy leaves and deep blue flowers on long stalks. It grows in wet areas, where the stems take root or float in the water. ●Veronica beccabunga, family Scrophulariaceae. ORIGIN Middle English broklemok, from brook 1 + hleomoce, the name of the plant in Old English.