doorbell, bell, buzzer
(noun) a push button at an outer door that gives a ringing or buzzing signal when pushed
Source: WordNet® 3.1
doorbell (plural doorbells)
A device on or adjacent to an outer door for announcing one's presence. It can be mechanical, directly sounding a bell, or a button that electrically sounds a chime or buzzer inside the building.
A button that actives an electric doorbell.
doorbell (third-person singular simple present doorbells, present participle doorbelling, simple past and past participle doorbelled)
(intransitive) To ring many doorbells in an effort to contact people and thereby spread information or solicit.
(transitive) To ring many doorbells of (target people or an area) in an effort to contact people and thereby spread information or solicit.
• bordello
Source: Wiktionary
8 May 2025
(noun) the act of protecting something by surrounding it with material that reduces or prevents the transmission of sound or heat or electricity
Decaffeinated coffee is not caffeine-free. Studies from the National Institute of Health (US) have shown that virtually all decaf coffee types contain caffeine. A 236-ml (8-oz) cup of decaf coffee contains up to 7 mg of caffeine, whereas a regular cup provided 70-140 mg.