To move upward on or mount, especially by using the hands and feet or the feet alone; ascend: climb a mountain; climbed the stairs. To grow in an upward direction on or over: ivy climbing the walls. To move oneself upward, especially by using the hands and feet. To rise slowly, steadily, or effortfully; ascend. See Synonyms at rise. To move in a specified direction by using the hands and feet: climbed down the ladder; climbed out the window. To slant or slope upward: The road climbs steeply to the top. To engage in the activity or sport of mountain climbing. To grow in an upward direction, as some plants do, often by means of twining stems or tendrils. An act of climbing; an ascent: a long, exhausting climb to the top. A place to be climbed: The face of the cliff was a steep climb. climb the walls To be anxious or frantic.