The noun calm has 1 sense (first 1 from tagged texts)
1. (3) composure, calm, calmness, equanimity -- (steadiness of mind under stress; "he accepted their problems with composure and she with equanimity")
Overview of verb calm
The verb calm has 4 senses (first 2 from tagged texts)
1. (5) calm, calm down, quiet, tranquilize, tranquillize, tranquillise, quieten, lull, still -- (make calm or still; "quiet the dragons of worry and fear")
3. calm, calm down, cool off, chill out, simmer down, settle down, cool it -- (become quiet or calm, especially after a state of agitation; "After the fight both men need to cool off."; "It took a while after the baby was born for things to settle down again.")
4. sedate, calm, tranquilize, tranquillize, tranquillise -- (cause to be calm or quiet as by administering a sedative to; "The patient must be sedated before the operation")
Overview of adj calm
The adj calm has 3 senses (first 1 from tagged texts)
1. (11) calm, unagitated, serene, tranquil -- (not agitated; without losing self-possession; "spoke in a calm voice"; "remained calm throughout the uproar"; "he remained serene in the midst of turbulence"; "a serene expression on her face"; "she became more tranquil"; "tranquil life in the country")
2. calm -- ((of weather) free from storm or wind; "calm seas")
3. easygoing, calm, placid -- (living without undue worry; taking life easy; "an easygoing man rarely stirred to anger"; "an air of placid sufficiency")