A machine or mechanical device

An abbreviation for "Mach number," which indicates the speed of an object relative to the speed of sound

मच संख्या

English Usage: The aircraft maintained a speed of 2.5 Mach during the flight.

Hindi Usage: विमान ने उड़ान के दौरान 2.5 मच संख्या की गति बनाए रखी।

Relating to or resembling a diamond in appearance or characteristics

हीरे जैसा

English Usage: The mach diamond shape of the water fountain caught everyone's attention.

Hindi Usage: पानी के फव्वारे का हीरे जैसा आकार सबका ध्यान खींचता है।