You can overdose on coffee if you drink about 30 cups in a brief period to get close to a lethal dosage of caffeine.
well, wellspring, fountainhead
(noun) an abundant source; “she was a well of information”
fountainhead, headspring, head
(noun) the source of water from which a stream arises; “they tracked him back toward the head of the stream”
Source: WordNet® 3.1
fountainhead (plural fountainheads)
A spring that is the source of a river.
An abundant source of knowledge, etc.
Source: Wiktionary
30 January 2023
(noun) an injectable form of benzodiazepine (trade name Versed) useful for sedation and for reducing pain during uncomfortable medical procedures
You can overdose on coffee if you drink about 30 cups in a brief period to get close to a lethal dosage of caffeine.