So the way to get from A to B is just to keep trying to hammer home the message?
The phrase means, “the nail that sticks out always gets hit by a hammer.”
Laya flew to New York and found Shulamith emaciated and panhandling, carrying a bag holding a hammer and an unopened can of food.
House Speaker John Boehner sent his party home with a packet to hammer home the jobs message districts.
If we enter with hammer in hand, we may leave with merely dust and rubble on our faces.
To secure the end of a bolt by burring the point with a hammer.
They hammer this tube into the ground and let some steam pass through the nozzle.
“Howd hard, mester,” said the big smith, flourishing about his hammer.
You can hammer it in the cold until it becomes as hard as soft iron.
They beat upon Steve's body and face as a hammer does upon an anvil.
Old English hamor "hammer," from Proto-Germanic *hamaraz (cf. Old Saxon hamur, Middle Dutch, Dutch hamer, Old High German hamar, German Hammer. The Old Norse cognate hamarr meant "stone, crag" (it's common in English place names), and suggests an original sense of "tool with a stone head," from PIE *akmen "stone, sharp stone used as a tool" (cf. Old Church Slavonic kamy, Russian kameni "stone"), from root *ak- "sharp" (see acme). Hammer and sickle as an emblem of Soviet communism attested from 1921, symbolizing industrial and agricultural labor.
late 14c., from hammer (n.). Meaning "to work (something) out laboriously" recorded from 1580s. Meaning "to defeat heavily" is from 1948. Related: Hammered; hammering. Hammered as a slang synonym for "drunk" attested by 1986.
hammer ham·mer (hām'ər)
(1.) Heb. pattish, used by gold-beaters (Isa. 41:7) and by quarry-men (Jer. 23:29). Metaphorically of Babylon (Jer. 50:23) or Nebuchadnezzar. (2.) Heb. makabah, a stone-cutter's mallet (1 Kings 6:7), or of any workman (Judg. 4:21; Isa. 44:12). (3.) Heb. halmuth, a poetical word for a workman's hammer, found only in Judg. 5:26, where it denotes the mallet with which the pins of the tent of the nomad are driven into the ground. (4.) Heb. mappets, rendered "battle-axe" in Jer. 51:20. This was properly a "mace," which is thus described by Rawlinson: "The Assyrian mace was a short, thin weapon, and must either have been made of a very tough wood or (and this is more probable) of metal. It had an ornamented head, which was sometimes very beautifully modelled, and generally a strap or string at the lower end by which it could be grasped with greater firmness."