Meaning of Tsunami is ?

 Tsunamis:

• Tsunamis are often called "harbour waves" because they are most commonly observed in shallow waters near shorelines and in harbours.
• The term "harbour wave" is actually a misnomer, as tsunamis are not necessarily created in harbours, nor are they actual waves caused by winds.
• Instead, they are typically caused by large undersea earthquakes, landslides, or volcanic eruptions that displace large amounts of water, creating a series of waves that propagate outward from the source.
• As these waves approach shallow water near shorelines, they become compressed and increase in height, which can cause devastating damage to coastal communities.
• The term "tsunami" comes from the Japanese words "tsu" (meaning harbour) and "nami" (meaning wave), which reflects the common observation of these destructive waves in Japanese harbours.

Hence, meaning of Tsunami is Harbour Wave.