(software) Acronym of hardware abstraction layer.

(fiction, computing) A homicidal computer, an artificial intelligence that acts similarly to the HAL 9000 featured in 2001: A Space Odyssey.

A diminutive of the male given names Henry, Harold and Harry.

plural of Hal

plural of HAL

Thirty minutes past any hour.

Of which there are two in a year; semiannual; biyearly.

Twice in a year; semiannually.

An exclamation used in songs of praise or thanksgiving to God. / (by extension) A general expression of gratitude or adoration.

A shout of “Hallelujah”. / (music) A song of praise to God; a musical composition based on the word "Hallelujah". / (in the plural) General praise.