Meaning

noun the state of being or appearing to be actively engaged in an activity

noun an Islamic fundamentalist group in Pakistan that fought the Soviet Union in Afghanistan in the 1980s; now operates as a terrorist organization primarily in Kashmir and seeks Kashmir's accession by Pak

noun a humming noise

originFrom North Levantine Arabic حمص (Ḥumṣ), variant of Arabic حِمْص (Ḥims), ultimately from Ancient Greek Ἔμεσᾰ (Émesă), ultimately from Aramaic חֲמָת (Ḥamāth, “hindrance, frustration, fortress”) + צובָא (Ṣōwḇā, “near, surrounding, station”).

Etymology from Wiktionary, CC BY-SA 3.0