From Longman Dictionary of Contemporary Englishlankylank‧y /ˈlæŋki/ adjective TALL PERSONsomeone who is lanky is tall and thin, and moves awkwardly SYN gangling a lanky young man —lankiness noun [uncountable]
Examples from the Corpus
lanky• a lanky sixteen-year-old boy• We were met by a tall, lanky youth called Yusef. 