What is "haustoria"

Haustorium \Haus*to"ri*um\ (h[add]s*t[=o]"r[i^]*[u^]m), n.; pl. Haustoria (h[add]s*t[=o]"r[i^]*[.a]). [LL., a well, fr. L. haurire, haustum, to drink.] (Bot.) One of the suckerlike rootlets of such plants as the dodder and ivy.
--R. Brown.

n. (plural of haustorium English)

1. n. a rootlike attachment in parasitic plants that penetrates and obtains food from the host

2. [also: haustoria (pl)]

See haustorium