2. (verb) To remove keef from cannabis, as with a grinder or otherwise.
3. (verb) To add keef to weed in order to make it more potent.
4. (adjective) Weed which has had keef added to it.
2. Good thing we keefed them before we smoked them.
3. You want to keef up these shitty mids?
4. Damn, that keefed bud got me so blazed!