21-letter words containing l, a, c, k
- school of hard knocks — the experience gained from living, especially from disappointment and hard work, regarded as a means of education: The only school he ever attended was the school of hard knocks.
- stock list department — (in an American stock exchange) the department dealing with monitoring compliance with its listing requirements and rules
- tartarian honeysuckle — an Asian honeysuckle, Lonicera tatarica, having fragrant, white to pink flowers.
- the flickertail state — a name for the state of North Dakota
- the rock of gibraltar — a limestone promontory at the tip of S Spain
- the yellow brick road — the road to success or happiness (in the film the Wizard of Oz the yellow brick road leads to Oz)
- to be hard luck on sb — to be unfortunate or unlucky for someone
- to kill a mockingbird — a novel (1960) by Harper Lee.
- tuple space smalltalk — ["Using Tuple Space Communication in Distributed Object-Oriented Languages", S. Matsuoka et al, SIGPLAN Notices 23(11):276-284 (Nov 1988)].
- white-knuckle paddler — an inexpert and timid canoeist.