head up

head up

[′hed ‚əp]

(engineering)

To tighten bolts on a hatch cover or access hole plate to prevent leakage from or into an operating vessel.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

head up

To remove the lower branches from a tree or large shrub.

McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.