trichome
Concise Oxford English Dictionary © 2008 Oxford University Press:
trichome /ˈtrʌɪkəʊm, ˈtrɪ-/
▶noun Botany a small hair or other outgrowth from the epidermis of a plant, typically unicellular and glandular.
– origin C19: from Gk trikhōma, from trikhoun ‘cover with hair’.
'trichome' also found in these Oxford entries:

