magnetic compass

noun
🔊/mæɡˌnetɪk ˈkʌmpəs/
🔊/mæɡˌnetɪk ˈkʌmpəs/
(also compass)
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  1. an instrument for finding direction, with a needle that always points to the north罗盘;罗经;指南针;罗盘仪Topics Hobbiesc1