A diminutive of the male given name Herbert

(countable) Any green, leafy plant, or parts thereof, used to flavour or season food.

(countable) A plant whose roots, leaves or seeds, etc. are used in medicine.

(uncountable, slang) Cannabis.

(countable, botany) A plant whose stem is not woody and does not persist beyond each growing season

(countable, US, slang) A lame or uncool person.