Obs. Pa. t. 4 flat(te, flattide. [ad. OF. flatir, flater to dash, hurl, intr. to dash, be thrown down.]
1. trans. To cast suddenly, dash.
c. 1330. Arth. & Merl., 9748.
| Gif Arthour no had y-come | |
| Wiþ his sextene, þat on hem plat, | |
| And euerich a paien to deþ flat. | 
1362. Langl., P. Pl., A. V. 224.
| Til vigilate þe veil · fette water at his eiȝen, | |
| And flatte [v.r. flat, flattide it] on his face · and faste on him criȝede. | 
1375. Cantic. de Creatione, 221, in Anglia, I. 303, etc.
| And hadde here gyled eft þat stounde, | |
| Doun she flat here face to grounde. | 
2. To smite or strike; in quots. absol.
c. 1330. Arth. & Merl., 9562.
| Boþe on helmes & ysen hatten | |
| Þe dintes of swordes flatten. | 
1362. Langl., P. Pl., A. VII. 174.
| Þenne Faytors for fere · flowen to Bernes, | |
| And flapten [v.r. flatte, flatten] on with fleiles · from morwe til euen. | 
3. intr. To dash, rush; to dart out.
c. 1330. Arth. & Merl., 5672.
| For the mouthe he [a dragon] had grininge, | |
| And the tong out flattinge. | 
c. 1450. Merlin, 275. The saisnes were so many that thei moste flat in-to the foreste wolde thei or noon.