to clamber, to scramble, to scramble up, to shimmy up (using both hands and feet); to climb over (when meaning climb "over", it's usually over something vertical like a wall); to climb, to climb up, to scale; to creep, to climb (e.g. a plant or tree); to climb (the social ladder)
triplet; three-piece suite; a type of card game; a type of Latin American musical rhythm consisting of three-beat units; an obsolete letter shaped like a 3 from colonial Mayan orthographies to indicate a uvular ejective