6 And over it a fair portcullis hung,

portcullis > [the nose]

7 Which to the gate directly did incline, 8 With comely compass, and compacture strong,

compass > proportion compacture > {Compact structure; manner of putting closely together}

9 Neither unseemly short, nor yet exceeding long.

209.25

Within the Barbican a Porter sate,
2 Day and night duely keeping watch and ward,
Nor wight, nor word mote passe out of the gate,
4 But in good order, and with dew regard;
Vtterers of secrets he from thence debard,
6 Bablers of folly, and blazers of crime.
His larumbell might lowd and wide be hard,
8 When cause requird, but neuer out of time;
Early and late it rong, at euening and at prime.

1 Within the barbican a porter sat,

barbican > {Outer defence of a castle, esp. a tower erected over a gate or bridge; hence: the mouth} porter > [the tongue]

2 Day and night duly keeping watch and ward,